[PHP] fscanf and memory
Hi,
I don't know if it's a bug in php but if I do
$fp=fopen("some_file","r");
while (!feof($fp))
{
fscanf($fp, "%d %d",&$var1,&$var2);
// some treatment
}
fclose($fp);
and the file is big enough, php eat up memory like hot cakes.
But if I do
$fp=fopen("some_file","r");
while (!feof($fp))
{
$line = fscanf($fp, "%d %d");
list ($var1, $var2) = $line;
// some treatment
}
fclose($fp);
It work just fine. Seems a problem with fscanf.
Has someone ever experienced this? Any advises?
Oh btw I'm using php 4.3.4 with Apache 1.3.29
Thanks in advance
Sébastien Guay
_
MSN Search, le moteur de recherche qui pense comme vous !
http://fr.ca.search.msn.com/
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Re: [PHP] fscanf and memory
Hi,
Friday, February 27, 2004, 4:48:20 AM, you wrote:
SG> Hi,
SG> I don't know if it's a bug in php but if I do
SG> $fp=fopen("some_file","r");
SG> while (!feof($fp))
SG> {
SG> fscanf($fp, "%d %d",&$var1,&$var2);
SG> // some treatment
SG> }
SG> fclose($fp);
SG> and the file is big enough, php eat up memory like hot cakes.
SG> But if I do
SG> $fp=fopen("some_file","r");
SG> while (!feof($fp))
SG> {
SG> $line = fscanf($fp, "%d %d");
SG> list ($var1, $var2) = $line;
SG> // some treatment
SG> }
SG> fclose($fp);
SG> It work just fine. Seems a problem with fscanf.
SG> Has someone ever experienced this? Any advises?
SG> Oh btw I'm using php 4.3.4 with Apache 1.3.29
SG> Thanks in advance
SG> Sébastien Guay
SG> _
SG> MSN Search, le moteur de recherche qui pense comme vous !
SG> http://fr.ca.search.msn.com/
Thats not the way to use scanf, I think you are doing a scanf for each
line in the file. It should be something like:
while(fscanf($fp, "%d %d",&$var1,&$var2)){
//... do something with the values
}
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regards,
Tom
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[PHP] fscanf
Hi I'm having dramers with fscanf I have a line: text, text, text I can't work out how to scan removing the comma and whitespace. the text can be absolutle anything. at the moment I have $array = fscanf ($fp, %s%[^,] %s%[^,] %s%[^,]); Thanks Kris -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] fscanf - string format -> clear discription
where can i find a discription of the possible options for the "sting format" in the fscanf command [ fscanf ( int handle, string format [, string var1]) ] For example, what means: "%s\t or %s\n in the command fscanf ($fp, "%s\t%s\t%s\n"); -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] fscanf Help!!
I'm starting to learn the language and I'm having a problem with fscanf as witnessed below: http://www.zephyr-works.com/ascii-5/dev/phpnews.phps The output is at: http://www.zephyr-works.com/ascii-5/dev/phpnews.php I can't seem to get the variables to assign correctly... The source file is: http://www.zephyr-works.com/ascii-5/dev/slashdot.xml Thanks!! James _ Get your FREE download of MSN Explorer at http://explorer.msn.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] fscanf syntax
Thanks Chris,
That worked great. I didn't know that a file could be read directly into an
array.
--Pat
"Chris Fry" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Pat,
>
> You could read the file into an array;
>
> $aryNessus = file("/pathtofile/filename", "r");
>
> Each row of the array then has one line from the file;
> Get the record count;
> $intNumRecs = count($aryNessus);
>
> Now read through the array and extract the values;
>
> for($i=0;$i<=$intNumRecs;$i++) {
> $aryNessusFields = explode("|", $aryNessus[$i]);
> $hostname = $aryNessusFields[0];
> $protocol = $aryNessusFields[1];
> $number = $aryNessusFields[2];
> $severity = $aryNessusFields[3];
> $description + $aryNessusFields[4];
> // Save the data into the database here
> }
>
>
> Regards
>
> Chris
>
> Patrick Brown wrote:
>
> > I want to parse a file with the following syntax.
> >
> > hostname|protocol|number|severity|description
> >
> > Each record is on it's own line and have the fields delimited by the
pipe
> > character |. The file may have thousands of records and I would like to
> > bring them into a database for reporting.
> >
> > Some of you may recognize this a the file format of a Nessus security
scan
> > file.
> >
> > What function should I use and what would the syntax be?
> >
> > Thanks,
> > Pat
> >
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> --
> Chris Fry
> Quillsoft Pty Ltd
> Specialists in Secure Internet Services and E-Commerce Solutions
> 10 Gray Street
> Kogarah
> NSW 2217
> Australia
>
> Phone: +61 2 9553 1691
> Fax: +61 2 9553 1692
> Mobile: 0419 414 323
> eMail: [EMAIL PROTECTED]
> http://www.quillsoft.com.au
>
> You can download our Public CA Certificate from:-
> https://ca.secureanywhere.com/htdocs/cacert.crt
>
> **
>
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> the use of the authorised recipient. If you are not an authorised
> recipient of this e-mail, please contact Quillsoft Pty Ltd by return
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> in reliance on this e-mail or any attachments, and should destroy all
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Re: [PHP] fscanf syntax
Pat,
You could read the file into an array;
$aryNessus = file("/pathtofile/filename", "r");
Each row of the array then has one line from the file;
Get the record count;
$intNumRecs = count($aryNessus);
Now read through the array and extract the values;
for($i=0;$i<=$intNumRecs;$i++) {
$aryNessusFields = explode("|", $aryNessus[$i]);
$hostname = $aryNessusFields[0];
$protocol = $aryNessusFields[1];
$number = $aryNessusFields[2];
$severity = $aryNessusFields[3];
$description + $aryNessusFields[4];
// Save the data into the database here
}
Regards
Chris
Patrick Brown wrote:
> I want to parse a file with the following syntax.
>
> hostname|protocol|number|severity|description
>
> Each record is on it's own line and have the fields delimited by the pipe
> character |. The file may have thousands of records and I would like to
> bring them into a database for reporting.
>
> Some of you may recognize this a the file format of a Nessus security scan
> file.
>
> What function should I use and what would the syntax be?
>
> Thanks,
> Pat
>
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> PHP General Mailing List (http://www.php.net/)
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Chris Fry
Quillsoft Pty Ltd
Specialists in Secure Internet Services and E-Commerce Solutions
10 Gray Street
Kogarah
NSW 2217
Australia
Phone: +61 2 9553 1691
Fax: +61 2 9553 1692
Mobile: 0419 414 323
eMail: [EMAIL PROTECTED]
http://www.quillsoft.com.au
You can download our Public CA Certificate from:-
https://ca.secureanywhere.com/htdocs/cacert.crt
**
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the use of the authorised recipient. If you are not an authorised
recipient of this e-mail, please contact Quillsoft Pty Ltd by return
e-mail.
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in reliance on this e-mail or any attachments, and should destroy all
copies of them.
This e-mail and any attachments may also contain copyright material
belonging to Quillsoft Pty Ltd.
The views expressed in this e-mail or attachments are the views of
the author and not the views of Quillsoft Pty Ltd.
You should only deal with the material contained in this e-mail if
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Re: [PHP] fscanf syntax
Hi Patrick, @ 9:04:59 PM on 3/30/2001, Patrick Brown wrote: ... > hostname|protocol|number|severity|description > Each record is on it's own line and have the fields delimited by the pipe > character |. The file may have thousands of records and I would like to > bring them into a database for reporting. ... > What function should I use and what would the syntax be? Try explode(). -Brian -- PGP is spoken here: 0xE4D0C7C8 Please do not carbon copy me on list replies. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP] fscanf syntax
I want to parse a file with the following syntax. hostname|protocol|number|severity|description Each record is on it's own line and have the fields delimited by the pipe character |. The file may have thousands of records and I would like to bring them into a database for reporting. Some of you may recognize this a the file format of a Nessus security scan file. What function should I use and what would the syntax be? Thanks, Pat -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] fscanf
- Original Message - From: "Kubol" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, March 13, 2001 12:48 AM Subject: Re: [PHP] fscanf > 01-03-13 05:00:01, "Yasuo Ohgaki" <[EMAIL PROTECTED]> wrote: > > >I think fscanf() is line oriented in C, isn't it? (I haven't used fscanf() for a > >long time, I'm not 100% sure w/o reference.) > no, i'm sure in c fscanf reads the next string available, not first string in next line > >Your $buffer should only have "lenin". > i agree. in first iteration buffer should contain "lenin", but in second the content should be "lives", not "forever", > but is "forever" and i dont > know why and i'm angry about it :-) > >while (fscanf($file,"%s %s",$buf1,buf2)) > >You should get "lives" in $buf2. > i agree again, but i dont know how many stings do i have in one line. therefore i cant use > fscanf($file,"n*%s",n*some_variables); > besides it looks terrible... :-) Now I understand why you are wondering. In C, you can get "words" in file with your code, but not in PHP. fscanf() between C and PHP is not identical when I made a simple test codes for both. It seems PHP's fscanf() advances file pointer to end of line while C's fscanf() must be done by programmers like fscanf(fp,"%*[^\n]"). In most cases, programmers want to move file pointer to the end of line. Maybe that's why PHP's fscanf() does this. We cannot expect PHP functions works just like C/C++/Java since it is different languange even is name of the function is the same. I guess what you want to do is getting all words from a file using fscanf(), but it seems it is not possible with PHP's fscanf(). (Or is it a bug? Anyone?) Functions that have the same name in C better to be behaive just like C in PHP for C programmers. (but may not be good for non-C programmers.) I'm relatively new to PHP, so I don't know historical reason why some functions does not behaive like C. I see a lot of differences PHP and C, I think this is the way it is. How about a start new thread if you still curious about fscanf() behaviour? Someone may be able to give better explaination. Regards, -- Yasuo Ohgaki > regards, > jakub zytka > > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > To contact the list administrators, e-mail: [EMAIL PROTECTED] > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] fscanf
01-03-13 05:00:01, "Yasuo Ohgaki" <[EMAIL PROTECTED]> wrote: >I think fscanf() is line oriented in C, isn't it? (I haven't used fscanf() for a >long time, I'm not 100% sure w/o reference.) no, i'm sure in c fscanf reads the next string available, not first string in next line >Your $buffer should only have "lenin". i agree. in first iteration buffer should contain "lenin", but in second the content should be "lives", not "forever", but is "forever" and i dont know why and i'm angry about it :-) >while (fscanf($file,"%s %s",$buf1,buf2)) >You should get "lives" in $buf2. i agree again, but i dont know how many stings do i have in one line. therefore i cant use fscanf($file,"n*%s",n*some_variables); besides it looks terrible... :-) regards, jakub zytka -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] fscanf
"Kubol" <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> hello
>
> if this is really a silly problem dont blame me, i'm a newbie in php (but i'm
experienced in c++ a bit :-)
> well, imagine i want to write a content of some text file word by word.
example will be more understandable
> than my english:
> let file.txt consists:
> lenin lives
> forever
> i want my php script to write to the screen:
> lenin
> lives
> forever
> I tried to manage this using fscanf function. i expected it works same as in
c, but it looks it doesnt. consider
> the code:
> while (fscanf($file,"%s",$buffer)==1)
> {
> echo $buffer,"";
> }
> the result:
> lenin
> forever
> just like fscanf moved the file pointer to the next line after reading
"lenin". i dont know whats up... why "lives"
> disappeared??? i know i can try using fgets and then split the string, but i
want to know why fscanf doesnt
> work... :-)
> could anyone explain me this phenomena?
I think fscanf() is line oriented in C, isn't it? (I haven't used fscanf() for a
long time, I'm not 100% sure w/o reference.)
"%s" format in fscanf() and sscanf() will macthes sequecne of non-white-space
charactors in C and PHP.
Your $buffer should only have "lenin".
So if you write like
while (fscanf($file,"%s %s",$buf1,buf2))
You should get "lives" in $buf2.
Regards,
Yasuo Ohgaki
>
> best regards,
> jakub zytka
>
>
>
>
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[PHP] fscanf
hello
if this is really a silly problem dont blame me, i'm a newbie in php (but i'm
experienced in c++ a bit :-)
well, imagine i want to write a content of some text file word by word. example will
be more understandable
than my english:
let file.txt consists:
lenin lives
forever
i want my php script to write to the screen:
lenin
lives
forever
I tried to manage this using fscanf function. i expected it works same as in c, but it
looks it doesnt. consider
the code:
while (fscanf($file,"%s",$buffer)==1)
{
echo $buffer,"";
}
the result:
lenin
forever
just like fscanf moved the file pointer to the next line after reading "lenin". i dont
know whats up... why "lives"
disappeared??? i know i can try using fgets and then split the string, but i want to
know why fscanf doesnt
work... :-)
could anyone explain me this phenomena?
best regards,
jakub zytka
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Re: [PHP] fscanf problem
Hmm..noone has any ideas on this one? Its really driving me crazy
- John Vanderbeck
- Admin, GameDesign
- Original Message -
From: "John Vanderbeck" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, February 11, 2001 10:01 PM
Subject: [PHP] fscanf problem
> my code...
>
> WRITE TO FILE:
> if ($item_file = fopen("$thisdir/item.dat", "w"))
> {
> fwrite($item_file, "$new_item\n$asin\n$description\namazon");
> fclose($item_file);
> echo "$new_item created";
> }
>
> READ FROM FILE:
>$item_file = fopen("$thisdir/item.dat", "r");
>fscanf($item_file, "%s\n%s\n%s\n%s", $display, $asin, $description,
> $link);
>fclose($item_file);
>
> PROBLEM:
> $display comes out correct, but $asin, $descrition and $link are always
> empty
>
> SAMPLE FILE:
> MyItem
> 11517
> ThisIsMyDecriptionWithoutSpaces
> amazon
>
> - John Vanderbeck
> - Admin, GameDesign
>
>
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>
>
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[PHP] fscanf problem
my code...
WRITE TO FILE:
if ($item_file = fopen("$thisdir/item.dat", "w"))
{
fwrite($item_file, "$new_item\n$asin\n$description\namazon");
fclose($item_file);
echo "$new_item created";
}
READ FROM FILE:
$item_file = fopen("$thisdir/item.dat", "r");
fscanf($item_file, "%s\n%s\n%s\n%s", $display, $asin, $description,
$link);
fclose($item_file);
PROBLEM:
$display comes out correct, but $asin, $descrition and $link are always
empty
SAMPLE FILE:
MyItem
11517
ThisIsMyDecriptionWithoutSpaces
amazon
- John Vanderbeck
- Admin, GameDesign
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