Re: [PHP] Found a PHP bug!!!!!!!!!
So sprach 1LT John W. Holmes am 2003-01-27 um 15:49:33 -0500 :
Actually, 08 is equal to 8 in PHP. PHP will convert the string to an
No, that's not true:
if (08 == 8){ echo equal; }
if (08 === 8){ echo more equal; }
This will only print equal and not more equal.
Alexander Skwar
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Re: [PHP] Found a PHP bug!!!!!!!!!
--- Alexander Skwar [EMAIL PROTECTED] wrote:
So sprach 1LT John W. Holmes am 2003-01-27 um 15:49:33
-0500 :
Actually, 08 is equal to 8 in PHP. PHP will convert
the string to an
No, that's not true:
if (08 == 8){ echo equal; }
if (08 === 8){ echo more equal; }
This will only print equal and not more equal.
Good thing he didn't say they were more equal, right?
Chris
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Re: [PHP] Found a PHP bug!!!!!!!!!
just try doing it with === (three equal signs) and you'll see what is where -- Maxim Maletsky [EMAIL PROTECTED] Cal Evans [EMAIL PROTECTED] wrote... : John. Actually, 08 is equal to 8 in PHP. PHP will convert the string to an integer and the two will compare as equal. No they are not equal. Yes, PHP will do the conversion so that they are equal. That does not refute the fact that logically '08' != 8. Someone already posted why the problem was happening, because the numbers were being converted to invalid octal numbers and being set to zero. I understand the problem at hand. (and did when I posted) However, if Scott had been doing the conversions manually, he would never have run across this problem. It is a bad idea to rely on the language (whatever the language) to do automatic variable conversions. =C= -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
Your bug is this:
inconsistency of types.
You split a formatted string into smaller strings and compare the
integers to it. In order to do this correctly, you will need to take
your integers and convert them into the strings, format of which you
already know and used for deformatting the original string. Then compare.
That is the only way to be safe, other ways are magic because PHP
debugged them for you. It's really all about the programming logic. few
of you who are fluent with C or Java would dump into this.
--
Maxim Maletsky
[EMAIL PROTECTED]
Scott Fletcher [EMAIL PROTECTED] wrote... :
Found a PHP bug, I'm using PHP version 4.2.3. I have been struggling with
why PHP code failed to work with the month is August or September, so I have
been playing around it and found the problem. I recently wrote a demo
script for you all to play around with. Let me know which PHP version does
this bug not affected you I'm going to file a PHP bug at
http://bug.php.net.. I'll let you know where PHP bug # is it. To tell
you the truth, I don't know how to search for existing bug on this one if
there is any because I don't know if it is an if-statement issue or if it is
something else Feel free to submit a patch if you know how.
Let me know what you found and post it here...
--clip--
?
//Sample Code. ==
$VARIABLE[0] = 2002-01;
$VARIABLE[1] = 2002-02;
$VARIABLE[2] = 2002-03;
$VARIABLE[3] = 2002-04;
$VARIABLE[4] = 2002-05;
$VARIABLE[5] = 2002-06;
$VARIABLE[6] = 2002-07;
$VARIABLE[7] = 2002-08;
$VARIABLE[8] = 2002-09;
$VARIABLE[9] = 2002-10;
$VARIABLE[10] = 2002-11;
$VARIABLE[11] = 2002-12;
//Loop Code to check the variable ===
for ($x=0;$x12;$x++) {
$month = substr($VARIABLE[$x],5,2);
echo The # of month is .$x.br;
if ($month == 01) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 02) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 03) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 04) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 05) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 06) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 07) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 08) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 09) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 10) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 11) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 12) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
echo br;
}
//Strange Workaround to 08 and 09 ===
echo Strange Workaround to the Problem!!brbr;
$month = substr($VARIABLE[7],5,2);
echo The # of month is 08br;
if (trim($month) == 8) {
echo It's working!!!br;
}
$month = substr($VARIABLE[8],5,2);
echo The # of month is 09br;
if (trim($month) == 9) {
echo It's working!!!br;
}
//Testing (Should this be working or not??) =
echo brbr;
$month = substr($VARIABLE[0],5,2);
echo The # of month is 1br;
if (trim($month) == 1) { //With 1 as an integer...
echo It's working!!!br;
}
echo br;
$month = substr($VARIABLE[0],5,2);
echo The # of month is 01br;
if (trim($month) == 01) { //With 01 as an integer
echo It's working!!!br;
}
echo br;
$month = substr($VARIABLE[0],5,2);
echo The # of month is 1br;
if (trim($month) == 1) { //With 1 as an integer...
echo It's working!!!br;
}
echo br;
$month = substr($VARIABLE[0],5,2);
echo The # of month is 01br;
if (trim($month) == 01) { //With 01 as an integer
echo It's working!!!br;
}
?
--clip--
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[PHP] Found a PHP bug!!!!!!!!!
Found a PHP bug, I'm using PHP version 4.2.3. I have been struggling with
why PHP code failed to work with the month is August or September, so I have
been playing around it and found the problem. I recently wrote a demo
script for you all to play around with. Let me know which PHP version does
this bug not affected you I'm going to file a PHP bug at
http://bug.php.net.. I'll let you know where PHP bug # is it. To tell
you the truth, I don't know how to search for existing bug on this one if
there is any because I don't know if it is an if-statement issue or if it is
something else Feel free to submit a patch if you know how.
Let me know what you found and post it here...
--clip--
?
//Sample Code. ==
$VARIABLE[0] = 2002-01;
$VARIABLE[1] = 2002-02;
$VARIABLE[2] = 2002-03;
$VARIABLE[3] = 2002-04;
$VARIABLE[4] = 2002-05;
$VARIABLE[5] = 2002-06;
$VARIABLE[6] = 2002-07;
$VARIABLE[7] = 2002-08;
$VARIABLE[8] = 2002-09;
$VARIABLE[9] = 2002-10;
$VARIABLE[10] = 2002-11;
$VARIABLE[11] = 2002-12;
//Loop Code to check the variable ===
for ($x=0;$x12;$x++) {
$month = substr($VARIABLE[$x],5,2);
echo The # of month is .$x.br;
if ($month == 01) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 02) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 03) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 04) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 05) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 06) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 07) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 08) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 09) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 10) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 11) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
if ($month == 12) { echo It's a Match!!br; } else { echo It's not
a Match!!br; }
echo br;
}
//Strange Workaround to 08 and 09 ===
echo Strange Workaround to the Problem!!brbr;
$month = substr($VARIABLE[7],5,2);
echo The # of month is 08br;
if (trim($month) == 8) {
echo It's working!!!br;
}
$month = substr($VARIABLE[8],5,2);
echo The # of month is 09br;
if (trim($month) == 9) {
echo It's working!!!br;
}
//Testing (Should this be working or not??) =
echo brbr;
$month = substr($VARIABLE[0],5,2);
echo The # of month is 1br;
if (trim($month) == 1) { //With 1 as an integer...
echo It's working!!!br;
}
echo br;
$month = substr($VARIABLE[0],5,2);
echo The # of month is 01br;
if (trim($month) == 01) { //With 01 as an integer
echo It's working!!!br;
}
echo br;
$month = substr($VARIABLE[0],5,2);
echo The # of month is 1br;
if (trim($month) == 1) { //With 1 as an integer...
echo It's working!!!br;
}
echo br;
$month = substr($VARIABLE[0],5,2);
echo The # of month is 01br;
if (trim($month) == 01) { //With 01 as an integer
echo It's working!!!br;
}
?
--clip--
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Re: [PHP] Found a PHP bug!!!!!!!!!
On Tuesday 28 January 2003 03:56, Scott Fletcher wrote:
Found a PHP bug, I'm using PHP version 4.2.3. I have been struggling with
why PHP code failed to work with the month is August or September, so I
have been playing around it and found the problem. I recently wrote a demo
script for you all to play around with. Let me know which PHP version does
this bug not affected you I'm going to file a PHP bug at
http://bug.php.net.. I'll let you know where PHP bug # is it. To tell
you the truth, I don't know how to search for existing bug on this one if
there is any because I don't know if it is an if-statement issue or if it
is something else Feel free to submit a patch if you know how.
Let me know what you found and post it here...
--clip--
[snip]
if ($month == 01) { echo It's a Match!!br; } else { echo It's
not a Match!!br; }
if ($month == 02) { echo It's a Match!!br; } else { echo It's
not a Match!!br; }
if ($month == 03) { echo It's a Match!!br; } else { echo It's
not a Match!!br; }
if ($month == 04) { echo It's a Match!!br; } else { echo It's
not a Match!!br; }
if ($month == 05) { echo It's a Match!!br; } else { echo It's
not a Match!!br; }
if ($month == 06) { echo It's a Match!!br; } else { echo It's
not a Match!!br; }
if ($month == 07) { echo It's a Match!!br; } else { echo It's
not a Match!!br; }
if ($month == 08) { echo It's a Match!!br; } else { echo It's
not a Match!!br; }
if ($month == 09) { echo It's a Match!!br; } else { echo It's
not a Match!!br; }
Have a look at the manual Types Integers
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RE: [PHP] Found a PHP bug!!!!!!!!!
-Original Message- From: Scott Fletcher [mailto:[EMAIL PROTECTED]] Found a PHP bug, I'm using PHP version 4.2.3. I have been struggling with why PHP code failed to work with the month is August or September I stumbled into this one a short while ago myself. It is not a bug, but a feature! ;) When passing values of 08 or 09 (Aug and Sep), PHP interprets them as octal numbers (because of the leading 0). However, 08 and 09 are invalid octal numbers, so PHP converts them to zero. The fixes are numerous: - remove the leading zero; - add zero to them before passing (addition forces a type conversion to int); - force a type conversion to integer using (int); - quote them (when PHP converts a string to an integer, it removes the leading zero); Kirk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
I don't see why a string wouldn't work when I use 08 (string) and match it against the integer 8, or 08. Kirk Johnson [EMAIL PROTECTED] wrote in message B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef">news:B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef... -Original Message- From: Scott Fletcher [mailto:[EMAIL PROTECTED]] Found a PHP bug, I'm using PHP version 4.2.3. I have been struggling with why PHP code failed to work with the month is August or September I stumbled into this one a short while ago myself. It is not a bug, but a feature! ;) When passing values of 08 or 09 (Aug and Sep), PHP interprets them as octal numbers (because of the leading 0). However, 08 and 09 are invalid octal numbers, so PHP converts them to zero. The fixes are numerous: - remove the leading zero; - add zero to them before passing (addition forces a type conversion to int); - force a type conversion to integer using (int); - quote them (when PHP converts a string to an integer, it removes the leading zero); Kirk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
--- Scott Fletcher [EMAIL PROTECTED] wrote: Found a PHP bug ... if ($month == 01) I guess you mean: if ($month == '01') If so, this is not a bug. Otherwise, please explain what you think is wrong. Chris -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Found a PHP bug!!!!!!!!!
Scott, Because 8 != 8. 8 (and 08) is a string with the numerals representing the number eight. It is not the number eight. (think back to basic math, the difference between a number and a numeral) PHP does some conversions for you automatically but that just saves you from yourself. (Personally, I wish it wouldn't. People have more trouble *because* of the automatic conversions than they would if they had to do the converting themselves.) To keep from running into this simply do the conversions yourself before you do comparisons. intval(08)==8 =C= * * Cal Evans * Stay plugged into your audience. * http://www.christianperformer.com * -Original Message- From: Scott Fletcher [mailto:[EMAIL PROTECTED]] Sent: Monday, January 27, 2003 2:14 PM To: [EMAIL PROTECTED] Subject: Re: [PHP] Found a PHP bug! I don't see why a string wouldn't work when I use 08 (string) and match it against the integer 8, or 08. Kirk Johnson [EMAIL PROTECTED] wrote in message B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef">news:B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef... -Original Message- From: Scott Fletcher [mailto:[EMAIL PROTECTED]] Found a PHP bug, I'm using PHP version 4.2.3. I have been struggling with why PHP code failed to work with the month is August or September I stumbled into this one a short while ago myself. It is not a bug, but a feature! ;) When passing values of 08 or 09 (Aug and Sep), PHP interprets them as octal numbers (because of the leading 0). However, 08 and 09 are invalid octal numbers, so PHP converts them to zero. The fixes are numerous: - remove the leading zero; - add zero to them before passing (addition forces a type conversion to int); - force a type conversion to integer using (int); - quote them (when PHP converts a string to an integer, it removes the leading zero); Kirk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
Re: [PHP] Found a PHP bug! uh oh... I don't see why a string wouldn't work when I use 08 (string) and match it against the integer 8, or 08. They're just different types. Normally PHP is veeery flexible with types, like javascript, but it just can't be flexible for you here because it needs to choose the most logic to the entire pool of programmers, and then 08 = a string 8 = a decimal integer 08 = by definition an impossible octal integer, so 0. Since you cannot tell PHP that $var is of a certain type like in [other] programming languages, for example you want it to be treated as an integer, PHP will handle it as what seems to be the most logic. You can try to use intval (does not alter a variable, only the value as it is used in a calculation or an if() statement) or settype (alters the variable). Kirk Johnson [EMAIL PROTECTED] wrote in message B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef">news:B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef... -Original Message- From: Scott Fletcher [mailto:[EMAIL PROTECTED]] Found a PHP bug, I'm using PHP version 4.2.3. I have been struggling with why PHP code failed to work with the month is August or September I stumbled into this one a short while ago myself. It is not a bug, but a feature! ;) When passing values of 08 or 09 (Aug and Sep), PHP interprets them as octal numbers (because of the leading 0). However, 08 and 09 are invalid octal numbers, so PHP converts them to zero. The fixes are numerous: - remove the leading zero; - add zero to them before passing (addition forces a type conversion to int); - force a type conversion to integer using (int); - quote them (when PHP converts a string to an integer, it removes the leading zero); Kirk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
I'm referring to '08' and '09' that don't work Chris Shiflett [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... --- Scott Fletcher [EMAIL PROTECTED] wrote: Found a PHP bug ... if ($month == 01) I guess you mean: if ($month == '01') If so, this is not a bug. Otherwise, please explain what you think is wrong. Chris -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
I do know that integer, string, double, float, etc are different.. I
have been using hte appropriate method like in javascript and c programming,
like converting it to integer and so on But when I start using PHP, I
find no such document of it and I have been using it for 3 years without a
problem. I asked people is there such a thing as converting it by using the
function and they told me there is no such a thing and that it is done
automatically... Now my time is a little bit wasted. So, I will correct
the problem with the php script...
I recently looked up on the manual as Jason Wong instructed me to. I
havne't found the answer since the document is a little bit mixed up.
Okay, I'm going back to my old way as I did in javascript and c programming.
So for php, it would be
floatval() for float...
strval() for string
settype() for whatever..
intval() for integer
Um, what about double???
Thanks,
Scott F.
Chris Hayes [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Re: [PHP] Found a PHP bug!
uh oh...
I don't see why a string wouldn't work when I use 08 (string) and match
it
against the integer 8, or 08.
They're just different types. Normally PHP is veeery flexible with
types, like javascript, but it just can't be flexible for you here
because
it needs to choose the most logic to the entire pool of programmers, and
then
08 = a string
8 = a decimal integer
08 = by definition an impossible octal integer, so 0.
Since you cannot tell PHP that $var is of a certain type like in [other]
programming languages, for example you want it to be treated as an
integer,
PHP will handle it as what seems to be the most logic.
You can try to use intval (does not alter a variable, only the value as it
is used in a calculation or an if() statement) or settype (alters the
variable).
Kirk Johnson [EMAIL PROTECTED] wrote in message
B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef">news:B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef...
-Original Message-
From: Scott Fletcher [mailto:[EMAIL PROTECTED]]
Found a PHP bug, I'm using PHP version 4.2.3. I have been
struggling with
why PHP code failed to work with the month is August or
September
I stumbled into this one a short while ago myself. It is not a bug,
but a
feature! ;) When passing values of 08 or 09 (Aug and Sep), PHP
interprets
them as octal numbers (because of the leading 0). However, 08 and 09
are
invalid octal numbers, so PHP converts them to zero.
The fixes are numerous:
- remove the leading zero;
- add zero to them before passing (addition forces a type conversion
to
int);
- force a type conversion to integer using (int);
- quote them (when PHP converts a string to an integer, it removes
the
leading zero);
Kirk
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Re: [PHP] Found a PHP bug!!!!!!!!!
Whoop! FOund it, it is doubleval()...
What does settype() do exactly
Scott Fletcher [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
I do know that integer, string, double, float, etc are different.. I
have been using hte appropriate method like in javascript and c
programming,
like converting it to integer and so on But when I start using PHP, I
find no such document of it and I have been using it for 3 years without a
problem. I asked people is there such a thing as converting it by using
the
function and they told me there is no such a thing and that it is done
automatically... Now my time is a little bit wasted. So, I will correct
the problem with the php script...
I recently looked up on the manual as Jason Wong instructed me to. I
havne't found the answer since the document is a little bit mixed up.
Okay, I'm going back to my old way as I did in javascript and c
programming.
So for php, it would be
floatval() for float...
strval() for string
settype() for whatever..
intval() for integer
Um, what about double???
Thanks,
Scott F.
Chris Hayes [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Re: [PHP] Found a PHP bug!
uh oh...
I don't see why a string wouldn't work when I use 08 (string) and
match
it
against the integer 8, or 08.
They're just different types. Normally PHP is veeery flexible with
types, like javascript, but it just can't be flexible for you here
because
it needs to choose the most logic to the entire pool of programmers, and
then
08 = a string
8 = a decimal integer
08 = by definition an impossible octal integer, so 0.
Since you cannot tell PHP that $var is of a certain type like in [other]
programming languages, for example you want it to be treated as an
integer,
PHP will handle it as what seems to be the most logic.
You can try to use intval (does not alter a variable, only the value as
it
is used in a calculation or an if() statement) or settype (alters the
variable).
Kirk Johnson [EMAIL PROTECTED] wrote in message
B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef">news:B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef...
-Original Message-
From: Scott Fletcher [mailto:[EMAIL PROTECTED]]
Found a PHP bug, I'm using PHP version 4.2.3. I have been
struggling with
why PHP code failed to work with the month is August or
September
I stumbled into this one a short while ago myself. It is not a bug,
but a
feature! ;) When passing values of 08 or 09 (Aug and Sep), PHP
interprets
them as octal numbers (because of the leading 0). However, 08 and 09
are
invalid octal numbers, so PHP converts them to zero.
The fixes are numerous:
- remove the leading zero;
- add zero to them before passing (addition forces a type
conversion
to
int);
- force a type conversion to integer using (int);
- quote them (when PHP converts a string to an integer, it removes
the
leading zero);
Kirk
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Re: [PHP] Found a PHP bug!!!!!!!!!
I would need to use intval() to solve this problem Scott Fletcher [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I'm referring to '08' and '09' that don't work Chris Shiflett [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... --- Scott Fletcher [EMAIL PROTECTED] wrote: Found a PHP bug ... if ($month == 01) I guess you mean: if ($month == '01') If so, this is not a bug. Otherwise, please explain what you think is wrong. Chris -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
U might want to do a type cast to integer from string...
http://www.php.net/manual/en/language.types.type-juggling.php
On Mon, 2003-01-27 at 13:47, Scott Fletcher wrote:
I would need to use intval() to solve this problem
Scott Fletcher [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
I'm referring to '08' and '09' that don't work
Chris Shiflett [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
--- Scott Fletcher [EMAIL PROTECTED] wrote:
Found a PHP bug
...
if ($month == 01)
I guess you mean:
if ($month == '01')
If so, this is not a bug. Otherwise, please explain what
you think is wrong.
Chris
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Re: [PHP] Found a PHP bug!!!!!!!!!
Because 8 != 8. 8 (and 08) is a string with the numerals representing the number eight. It is not the number eight. (think back to basic math, the difference between a number and a numeral) Actually, 08 is equal to 8 in PHP. PHP will convert the string to an integer and the two will compare as equal. PHP does some conversions for you automatically but that just saves you from yourself. (Personally, I wish it wouldn't. People have more trouble *because* of the automatic conversions than they would if they had to do the converting themselves.) Someone already posted why the problem was happening, because the numbers were being converted to invalid octal numbers and being set to zero. Run this bit of code for an example: echo br . ((01 == 1) ? Match : No Match); echo br . ((02 == 2) ? Match : No Match); echo br . ((03 == 3) ? Match : No Match); echo br . ((04 == 4) ? Match : No Match); echo br . ((05 == 5) ? Match : No Match); echo br . ((06 == 6) ? Match : No Match); echo br . ((07 == 7) ? Match : No Match); echo br . ((08 == 8) ? Match : No Match); echo br . ((09 == 9) ? Match : No Match); The last two won't match because 08 and 09 are invalid octal numbers, like Kirk Johnson already said. So 08 != 08 and 8 != 08, for example. ---John Holmes... -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
No, it's floatval. Doubleval is an alias left over from hwen floats were called doubles... Scott Fletcher wrote: Whoop! FOund it, it is doubleval()... What does settype() do exactly Scott Fletcher [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I do know that integer, string, double, float, etc are different.. I have been using hte appropriate method like in javascript and c programming, like converting it to integer and so on But when I start using PHP, I find no such document of it and I have been using it for 3 years without a problem. I asked people is there such a thing as converting it by using the function and they told me there is no such a thing and that it is done automatically... Now my time is a little bit wasted. So, I will correct the problem with the php script... I recently looked up on the manual as Jason Wong instructed me to. I havne't found the answer since the document is a little bit mixed up. Okay, I'm going back to my old way as I did in javascript and c programming. So for php, it would be floatval() for float... strval() for string settype() for whatever.. intval() for integer Um, what about double??? Thanks, Scott F. Chris Hayes [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Re: [PHP] Found a PHP bug! uh oh... I don't see why a string wouldn't work when I use 08 (string) and match it against the integer 8, or 08. They're just different types. Normally PHP is veeery flexible with types, like javascript, but it just can't be flexible for you here because it needs to choose the most logic to the entire pool of programmers, and then 08 = a string 8 = a decimal integer 08 = by definition an impossible octal integer, so 0. Since you cannot tell PHP that $var is of a certain type like in [other] programming languages, for example you want it to be treated as an integer, PHP will handle it as what seems to be the most logic. You can try to use intval (does not alter a variable, only the value as it is used in a calculation or an if() statement) or settype (alters the variable). Kirk Johnson [EMAIL PROTECTED] wrote in message B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef">news:B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef... -Original Message- From: Scott Fletcher [mailto:[EMAIL PROTECTED]] Found a PHP bug, I'm using PHP version 4.2.3. I have been struggling with why PHP code failed to work with the month is August or September I stumbled into this one a short while ago myself. It is not a bug, but a feature! ;) When passing values of 08 or 09 (Aug and Sep), PHP interprets them as octal numbers (because of the leading 0). However, 08 and 09 are invalid octal numbers, so PHP converts them to zero. The fixes are numerous: - remove the leading zero; - add zero to them before passing (addition forces a type conversion to int); - force a type conversion to integer using (int); - quote them (when PHP converts a string to an integer, it removes the leading zero); Kirk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- The above message is encrypted with double rot13 encoding. Any unauthorized attempt to decrypt it will be prosecuted to the full extent of the law.
Re: [PHP] Found a PHP bug!!!!!!!!!
Even doing a type cast won't make a difference for the original problem.
Even if you cast 08 to an integer and compare it to 08 (invalid octal
number), it'll still fail.
The original solution was the best, remove the leading zero from the
comparisons and let PHP handle the type casting.
---John Holmes...
- Original Message -
From: Ray Hunter [EMAIL PROTECTED]
To: Scott Fletcher [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Sent: Monday, January 27, 2003 3:45 PM
Subject: Re: [PHP] Found a PHP bug!
U might want to do a type cast to integer from string...
http://www.php.net/manual/en/language.types.type-juggling.php
On Mon, 2003-01-27 at 13:47, Scott Fletcher wrote:
I would need to use intval() to solve this problem
Scott Fletcher [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
I'm referring to '08' and '09' that don't work
Chris Shiflett [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
--- Scott Fletcher [EMAIL PROTECTED] wrote:
Found a PHP bug
...
if ($month == 01)
I guess you mean:
if ($month == '01')
If so, this is not a bug. Otherwise, please explain what
you think is wrong.
Chris
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RE: [PHP] Found a PHP bug!!!!!!!!!
John. Actually, 08 is equal to 8 in PHP. PHP will convert the string to an integer and the two will compare as equal. No they are not equal. Yes, PHP will do the conversion so that they are equal. That does not refute the fact that logically '08' != 8. Someone already posted why the problem was happening, because the numbers were being converted to invalid octal numbers and being set to zero. I understand the problem at hand. (and did when I posted) However, if Scott had been doing the conversions manually, he would never have run across this problem. It is a bad idea to rely on the language (whatever the language) to do automatic variable conversions. =C= -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
Yea, it's too bad that not many people know about it. I first asked and they told me it is done automatically. That was 3 years ago. I never had a problem for 3 years until now. So, I'm going back to the old way as I did in Javascript and C programming. I first started PHP 3 years ago, so it's no wonder why there's all the confusion when I was just an innocent victim. :-) Cal Evans [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... John. Actually, 08 is equal to 8 in PHP. PHP will convert the string to an integer and the two will compare as equal. No they are not equal. Yes, PHP will do the conversion so that they are equal. That does not refute the fact that logically '08' != 8. Someone already posted why the problem was happening, because the numbers were being converted to invalid octal numbers and being set to zero. I understand the problem at hand. (and did when I posted) However, if Scott had been doing the conversions manually, he would never have run across this problem. It is a bad idea to rely on the language (whatever the language) to do automatic variable conversions. =C= -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
Double and Float are not exactly the same thing. Double is --- 11.123 Float is -- .00238823993 Leif K-Brooks [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... No, it's floatval. Doubleval is an alias left over from hwen floats were called doubles... Scott Fletcher wrote: Whoop! FOund it, it is doubleval()... What does settype() do exactly Scott Fletcher [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... I do know that integer, string, double, float, etc are different.. I have been using hte appropriate method like in javascript and c programming, like converting it to integer and so on But when I start using PHP, I find no such document of it and I have been using it for 3 years without a problem. I asked people is there such a thing as converting it by using the function and they told me there is no such a thing and that it is done automatically... Now my time is a little bit wasted. So, I will correct the problem with the php script... I recently looked up on the manual as Jason Wong instructed me to. I havne't found the answer since the document is a little bit mixed up. Okay, I'm going back to my old way as I did in javascript and c programming. So for php, it would be floatval() for float... strval() for string settype() for whatever.. intval() for integer Um, what about double??? Thanks, Scott F. Chris Hayes [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Re: [PHP] Found a PHP bug! uh oh... I don't see why a string wouldn't work when I use 08 (string) and match it against the integer 8, or 08. They're just different types. Normally PHP is veeery flexible with types, like javascript, but it just can't be flexible for you here because it needs to choose the most logic to the entire pool of programmers, and then 08 = a string 8 = a decimal integer 08 = by definition an impossible octal integer, so 0. Since you cannot tell PHP that $var is of a certain type like in [other] programming languages, for example you want it to be treated as an integer, PHP will handle it as what seems to be the most logic. You can try to use intval (does not alter a variable, only the value as it is used in a calculation or an if() statement) or settype (alters the variable). Kirk Johnson [EMAIL PROTECTED] wrote in message B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef">news:B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef... -Original Message- From: Scott Fletcher [mailto:[EMAIL PROTECTED]] Found a PHP bug, I'm using PHP version 4.2.3. I have been struggling with why PHP code failed to work with the month is August or September I stumbled into this one a short while ago myself. It is not a bug, but a feature! ;) When passing values of 08 or 09 (Aug and Sep), PHP interprets them as octal numbers (because of the leading 0). However, 08 and 09 are invalid octal numbers, so PHP converts them to zero. The fixes are numerous: - remove the leading zero; - add zero to them before passing (addition forces a type conversion to int); - force a type conversion to integer using (int); - quote them (when PHP converts a string to an integer, it removes the leading zero); Kirk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- The above message is encrypted with double rot13 encoding. Any unauthorized attempt to decrypt it will be prosecuted to the full extent of the law. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
Aw nut!!! The intval() doesn't work.. I had enough, I'm going to do what Kirk Johnson recommend. That one work better. Scott Fletcher [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Yea, it's too bad that not many people know about it. I first asked and they told me it is done automatically. That was 3 years ago. I never had a problem for 3 years until now. So, I'm going back to the old way as I did in Javascript and C programming. I first started PHP 3 years ago, so it's no wonder why there's all the confusion when I was just an innocent victim. :-) Cal Evans [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... John. Actually, 08 is equal to 8 in PHP. PHP will convert the string to an integer and the two will compare as equal. No they are not equal. Yes, PHP will do the conversion so that they are equal. That does not refute the fact that logically '08' != 8. Someone already posted why the problem was happening, because the numbers were being converted to invalid octal numbers and being set to zero. I understand the problem at hand. (and did when I posted) However, if Scott had been doing the conversions manually, he would never have run across this problem. It is a bad idea to rely on the language (whatever the language) to do automatic variable conversions. =C= -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
Another workaround to this problem is as an addition to Kirk Johnson's
suggestion
--clip--
$month = 08;
if (trim($month) == 8) {
echo You got it!!!;
}
--clip--
Scott Fletcher [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Aw nut!!! The intval() doesn't work.. I had enough, I'm going to do
what Kirk Johnson recommend. That one work better.
Scott Fletcher [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Yea, it's too bad that not many people know about it. I first asked and
they told me it is done automatically. That was 3 years ago. I never
had
a
problem for 3 years until now. So, I'm going back to the old way as I
did
in Javascript and C programming. I first started PHP 3 years ago, so
it's
no wonder why there's all the confusion when I was just an innocent
victim.
:-)
Cal Evans [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
John.
Actually, 08 is equal to 8 in PHP. PHP will convert the string to
an
integer and the two will compare as equal.
No they are not equal. Yes, PHP will do the conversion so that they
are
equal. That does not refute the fact that logically '08' != 8.
Someone already posted why the problem was happening, because the
numbers
were being converted to invalid octal numbers and being set to zero.
I understand the problem at hand. (and did when I posted) However, if
Scott
had been doing the conversions manually, he would never have run
across
this
problem. It is a bad idea to rely on the language (whatever the
language)
to do automatic variable conversions.
=C=
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Re: [PHP] Found a PHP bug!!!!!!!!!
doubleval
doubleval -- Alias of floatval()
http://www.php.net/manual/en/function.floatval.php
Description
This function is an alias of floatval()
http://www.php.net/manual/en/function.floatval.php.
Note: This alias is a left-over from a function-renaming. In older
versions of PHP you'll need to use this alias of the floatval()
http://www.php.net/manual/en/function.floatval.php function,
because floatval()
http://www.php.net/manual/en/function.floatval.php wasn't yet
available in that version.
Scott Fletcher wrote:
Double and Float are not exactly the same thing.
Double is --- 11.123
Float is -- .00238823993
Leif K-Brooks [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
No, it's floatval. Doubleval is an alias left over from hwen floats
were called doubles...
Scott Fletcher wrote:
Whoop! FOund it, it is doubleval()...
What does settype() do exactly
Scott Fletcher [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
I do know that integer, string, double, float, etc are different..
I
have been using hte appropriate method like in javascript and c
programming,
like converting it to integer and so on But when I start using PHP,
I
find no such document of it and I have been using it for 3 years without
a
problem. I asked people is there such a thing as converting it by using
the
function and they told me there is no such a thing and that it is done
automatically... Now my time is a little bit wasted. So, I will
correct
the problem with the php script...
I recently looked up on the manual as Jason Wong instructed me to. I
havne't found the answer since the document is a little bit mixed up.
Okay, I'm going back to my old way as I did in javascript and c
programming.
So for php, it would be
floatval() for float...
strval() for string
settype() for whatever..
intval() for integer
Um, what about double???
Thanks,
Scott F.
Chris Hayes [EMAIL PROTECTED] wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Re: [PHP] Found a PHP bug!
uh oh...
I don't see why a string wouldn't work when I use 08 (string) and
match
it
against the integer 8, or 08.
They're just different types. Normally PHP is veeery flexible with
types, like javascript, but it just can't be flexible for you here
because
it needs to choose the most logic to the entire pool of programmers,
and
then
08 = a string
8 = a decimal integer
08 = by definition an impossible octal integer, so 0.
Since you cannot tell PHP that $var is of a certain type like in
[other]
programming languages, for example you want it to be treated as an
integer,
PHP will handle it as what seems to be the most logic.
You can try to use intval (does not alter a variable, only the value as
it
is used in a calculation or an if() statement) or settype (alters the
variable).
Kirk Johnson [EMAIL PROTECTED] wrote in message
B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef">news:B11731D518B5D61183C700A0C98BE0D9FFBE5D@chef...
-Original Message-
From: Scott Fletcher [mailto:[EMAIL PROTECTED]]
Found a PHP bug, I'm using PHP version 4.2.3. I have been
struggling with
why PHP code failed to work with the month is August or
September
I stumbled into this one a short while ago myself. It is not a bug,
but a
feature! ;) When passing values of 08 or 09 (Aug and Sep), PHP
interprets
them as octal numbers (because of the leading 0). However, 08 and 09
are
invalid octal numbers, so PHP converts them to zero.
The fixes are numerous:
- remove the leading zero;
- add zero to them before passing (addition forces a type
conversion
to
int);
- force a type conversion to integer using (int);
- quote them (when PHP converts a string to an integer, it removes
the
leading zero);
Kirk
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the law.
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Re: [PHP] Found a PHP bug!!!!!!!!!
--- Scott Fletcher [EMAIL PROTECTED] wrote: Double and Float are not exactly the same thing. Double is --- 11.123 Float is -- .00238823993 They are the same thing. Please, read this: http://www.php.net/manual/en/language.types.php and this: http://www.php.net/manual/en/language.types.float.php Chris -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
Scott Fletcher wrote: Double and Float are not exactly the same thing. Double is --- 11.123 Float is -- .00238823993 I am absolutely new to PHP but what is above (since PHP seems to take most of its low-level terminology from C) is a fixed point number and the next is a floating point number, which may not fit into the 8 significant digits what is guaranteed for a float on all platforms. What do I miss? WW -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
Okay, correction... Double -- 11.1237 Float -- 0. Cheers! It's the way it work in C Programming... Double won't be as long or as infinite as the floating point. White Wolf [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Scott Fletcher wrote: Double and Float are not exactly the same thing. Double is --- 11.123 Float is -- .00238823993 I am absolutely new to PHP but what is above (since PHP seems to take most of its low-level terminology from C) is a fixed point number and the next is a floating point number, which may not fit into the 8 significant digits what is guaranteed for a float on all platforms. What do I miss? WW -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Found a PHP bug!!!!!!!!!
Scott Fletcher: Okay, correction... Double -- 11.1237 Float -- 0. Cheers! It's the way it work in C Programming... Double won't be as long or as infinite as the floating point. Absolutely wrong (if you would be in a C newsgroup you would even be accused of trolling :-))) double (in C) means: double precision floating point number float in C means: floating point number Float is guaranteed to store 6 significant digits (and usually noone uses it except on some very weird architectures) while double's minimum is 10 significant digits. WW -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
