php-general Digest 23 Dec 2012 03:29:11 -0000 Issue 8074
Topics (messages 319936 through 319946):
Re: Strange string stuff -- maybe everything is ending...
319936 by: tamouse mailing lists
319938 by: Tedd Sperling
319940 by: Jim Giner
319941 by: Tedd Sperling
319942 by: Tedd Sperling
319943 by: Tedd Sperling
319944 by: Tim Streater
319945 by: Bastien
319946 by: Stefan Wixfort
[ad] [free+opensource] htmlMicroscope (nested array viewer/dumper) upgraded -
now allows for even larger arrays
319937 by: rene7705
A Recent Emacs Mode for PHP
319939 by: Eric James Michael Ritz
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----------------------------------------------------------------------
--- Begin Message ---
On Fri, Dec 21, 2012 at 7:06 PM, Jim Giner <jim.gi...@albanyhandball.com> wrote:
> That actually makes sense tho. Afterall, a string is truly only one memory
> allocation whereas array elements are basically multiple vars having the
> same name. So - how can you unset one char in a string?
That actually depends on what you mean by "unset". If you mean to
remove it, str_replace should do, or if you only know it's position,
using substr twice to grab the front and back should work.
Setting a charcter to null ('') in the middle of the string could be
interesting for some applications...
Following up with the example I just showed:
// now let's 'unset' a character in the middle
$s3 = $s;
$s3[10] = '';
showstring($s3);
yields:
String of length 34 is Now we aregone down to the river!
s[0] : 'N' 78 s[1] : 'o' 111 s[2] : 'w' 119 s[3] : ' ' 32 s[4] : 'w'
119 s[5] : 'e' 101 s[6] : ' ' 32 s[7] : 'a' 97 s[8] : 'r' 114 s[9] :
'e' 101 s[10] : '' 0 s[11] : 'g' 103 s[12] : 'o' 111 s[13] : 'n' 110
s[14] : 'e' 101 s[15] : ' ' 32 s[16] : 'd' 100 s[17] : 'o' 111 s[18] :
'w' 119 s[19] : 'n' 110 s[20] : ' ' 32 s[21] : 't' 116 s[22] : 'o' 111
s[23] : ' ' 32 s[24] : 't' 116 s[25] : 'h' 104 s[26] : 'e' 101 s[27] :
' ' 32 s[28] : 'r' 114 s[29] : 'i' 105 s[30] : 'v' 118 s[31] : 'e' 101
s[32] : 'r' 114 s[33] : '!' 33
Still 34 byte string length, but looking at s[10] you see the null
byte. It didn't really affect printing, but it might affect other
things.
--- End Message ---
--- Begin Message ---
On Dec 21, 2012, at 5:20 PM, Volmar Machado <qi.vol...@gmail.com> wrote:
> What is the result in FF? And on IE? (the echoed string)
That's the problem, it's different.
If the last char in a string is set to null, then it causes JavaScript routines
running under IE to behave differently than the exact same JavaScript routines
running under Safari or FireFox. This was something I never expected.
However, the web industry has had to deal with IE oddities for many, many years
-- the problem remains and it's called IE.
Remember, M$ always has a better idea.
Cheers,
tedd
_____________________
t...@sperling.com
http://sperling.com
--- End Message ---
--- Begin Message ---
On 12/22/2012 11:29 AM, Tedd Sperling wrote:
On Dec 21, 2012, at 5:20 PM, Volmar Machado <qi.vol...@gmail.com> wrote:
What is the result in FF? And on IE? (the echoed string)
That's the problem, it's different.
If the last char in a string is set to null, then it causes JavaScript routines
running under IE to behave differently than the exact same JavaScript routines
running under Safari or FireFox. This was something I never expected.
However, the web industry has had to deal with IE oddities for many, many years
-- the problem remains and it's called IE.
Remember, M$ always has a better idea.
Cheers,
tedd
_____________________
t...@sperling.com
http://sperling.com
But basically, I think the work that others have done shows you that
your use of indices on strings is not the best way to manipulate them.
Hey - it's a string - use substr. :)
--- End Message ---
--- Begin Message ---
On Dec 21, 2012, at 5:27 PM, Jim Giner <jim.gi...@albanyhandball.com> wrote:
> From what I do know, there shouldn't be an a[4].
> In any case, let's assume that there is a bug in the string logic that you're
> using. Why not just use substr?
>
> $topic = substr($topic,0,-1);
and
On Dec 21, 2012, at 6:10 PM, Nathan Nobbe <quickshif...@gmail.com> wrote:
> Neat idea Tedd, but judging by a quick test, I don't think changing the
> value of the string is entirely supported though that notation.
>
> php > $str = 'blah';
> php > $str[3] = '';
> php > echo $str . PHP_EOL;
> bla
> php > echo strlen($str);
> 4
I'm not looking for a solution, but rather pointing out something I never
encountered before.
I would have never thought that a string echoed by a PHP script to be used in a
JavaScript routine would depend upon what Browser it is run on. That seems odd.
Cheers,
tedd
_____________________
t...@sperling.com
http://sperling.com
--- End Message ---
--- Begin Message ---
On Dec 21, 2012, at 8:06 PM, Jim Giner <jim.gi...@albanyhandball.com> wrote:
>> That actually makes sense tho. Afterall, a string is truly only one memory
>> allocation whereas array elements are basically multiple vars having the
>> same name. So - how can you unset one char in a string?
It depends upon the language -- while it is true that the start of a string is
located at a memory address, the chars of the string are identical to the chars
in an array. As such, you can view a string as an array. Each index is
representative of a char (one byte) in the string.
Cheers,
tedd
_____________________
t...@sperling.com
http://sperling.com
--- End Message ---
--- Begin Message ---
On Dec 22, 2012, at 7:58 AM, tamouse mailing lists <tamouse.li...@gmail.com>
wrote:
> A bit of an example to shed a little light?
> -snip-
> Not knowing IE really at all, nor it's JS engine, it's entirely
> possible that a null character in a string causes it to have problems.
That's the explanation I was looking for -- thanks!
Cheers,
tedd
_____________________
t...@sperling.com
http://sperling.com
--- End Message ---
--- Begin Message ---
On 22 Dec 2012 at 16:50, Tedd Sperling <t...@sperling.com> wrote:
> On Dec 21, 2012, at 8:06 PM, Jim Giner <jim.gi...@albanyhandball.com> wrote:
>>> That actually makes sense tho. Afterall, a string is truly only one memory
>>> allocation whereas array elements are basically multiple vars having the
>>> same name. So - how can you unset one char in a string?
>
> It depends upon the language -- while it is true that the start of a string is
> located at a memory address, the chars of the string are identical to the
> chars in an array. As such, you can view a string as an array. Each index is
> representative of a char (one byte) in the string.
That is explicitly documented here:
<http://php.net/manual/en/language.types.string.php>
String access and modification by character
Characters within strings may be accessed and modified by specifying the
zero-based offset of the desired character after the string using square array
brackets, as in $str[42]. Think of a string as an array of characters for this
purpose. The functions substr() and substr_replace() can be used when you want
to extract or replace more than 1 character.
--
Cheers -- Tim
--- End Message ---
--- Begin Message ---
Bastien Koert
On 2012-12-22, at 11:50 AM, Tedd Sperling <t...@sperling.com> wrote:
> On Dec 22, 2012, at 7:58 AM, tamouse mailing lists <tamouse.li...@gmail.com>
> wrote:
>
>> A bit of an example to shed a little light?
>> -snip-
>> Not knowing IE really at all, nor it's JS engine, it's entirely
>> possible that a null character in a string causes it to have problems.
>
> That's the explanation I was looking for -- thanks!
>
You'll need to check various versions of IE. IE8 has significant JS speed and
performance issues that don't show up in v7 or v9.
God bless Internet Exploder
> Cheers,
>
> tedd
>
> _____________________
> t...@sperling.com
> http://sperling.com
> --
> PHP General Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php
>
--- End Message ---
--- Begin Message ---
On 22.12.2012 00:31, Bastien wrote:
On 2012-12-21, at 5:05 PM, Ken Robinson <kenrb...@rbnsn.com> wrote:
A much easier way to do this would be to use a temporary array and then explode:
$tmp = array();
while($row = mysql_fetch_array($result)) // pulling stuff from a
database
{
$tmp[] = $row['category'];
}
$topic = explode('~',$tmp); // put the delimiter between each entry
echo($topic); // this result is used in an AJAX script
Shouldn't that be implode to convert the array to string with the delimiter?
Bastien
Yes, it should be implode().
Stefan
--- End Message ---
--- Begin Message ---
Hi Folks.
URL: http://fancywebapps.com/products/htmlMicroscope
Just wanted to let you all know that I've completed a long overdue
upgrade to my free htmlMicroscope web component.
It is basically a fancy replacement for var_dump() which can show you
the full depth of an array regardless of how large or deep your PHP
array or javascript object is.
I won't repeat the entire homepage content here, but I think this
version could be useful for at least some of the programmers on this
list.
I'll only repeat this message for significant updates.
This is a significant update because I've finally cracked the barrier
of displaying an object with more than a few hundred key-value pairs
on a single level. That used to crash all browsers, not anymore.
i'll continue work on this, want to build in (in order of priority):
- auto navigation options (auto smooth scroll to links within the data)
- middle mouse button click -> smooth offset scrolling
- html source view
- auto indented and colorcoded syntax-checked view for html + json
Merry Christmas and a productive New Year to ya'll :D
--- End Message ---
--- Begin Message ---
Hello everyone,
I do not know how many PHP developers use GNU Emacs for writing code.
But I assume it must be a decent amount since there are multiple PHP
modes for Emacs floating around the Internet. For months I have
worked to improve one of those modes, what seemed to be the most
popular: http://php-mode.sourceforge.net/
Of course, not all of the improvements are my own work. Many people
have been kind enough to contribute bug fixes and features. This is
the version of php-mode which I maintain:
https://github.com/ejmr/php-mode
I simply wanted to share this updated mode in case any developers
using Emacs find it useful.
--
ejmr
南無妙法蓮華經
--- End Message ---
