Memory consumption

07-01-2007, 3:32 PM

Hi,

I have a question about memory consumption of php scripts. I am running php
on my Linux server, together with apache and MySQL. I have this very simple
script (listed below). Everytime I run that script by browsing to it with my
browser (from Windows 2000, IE6), the amount of free memory on the Linux
server slowly decreases. Not fast, but is does..

This is the script..
========================
<?php

echo <<<END
<html>
<head>
<link rel=stylesheet type='text/css' href='/style.css'>
</head>
<body>
</body>
</html>
END;

?>
========================

As you can see, nothing special there. No array's, vars, database things, or
whatsoever.
The reason why I checked this is because I have several more complex
scripts. With these scripts, I run out of memory pretty fast (have only 64MB
installed in my server

).. I have to restart the apache server in order
to get the memory back..

Anyone an idea why this happens? (and how this can be solved?)

With regards,
Marcel

07-01-2007, 3:32 PM

Hey there,

It looks like you've migrated from Perl to PHP

I don't know why the memory consumption occurs, but I do know how to make
your code more efficient:

> This is the script..
> ========================
> <?php
>
> echo <<<END

You don't need to use this echo command...it's a typical PERL thing. You can
close the PHP code using "?>" and type whatever normal HTML code, when you
want to use PHP again, simply re-open the code with a "<?php" statement.

Example:
<?php
print $testvar;
?>

<BR><BR> 

<?php
print $testvar2;
?>
</BODY> 
</HTML>

Ivo

07-01-2007, 3:32 PM

pickme wrote:

> Hi,
>
> I have a question about memory consumption of php scripts. I am running php
> on my Linux server, together with apache and MySQL. I have this very simple
> script (listed below). Everytime I run that script by browsing to it with my
> browser (from Windows 2000, IE6), the amount of free memory on the Linux
> server slowly decreases. Not fast, but is does..
>
> This is the script..
> ========================
> <?php
>
> echo <<<END
> <html>
> <head>
> <link rel=stylesheet type='text/css' href='/style.css'>
> </head>
> <body>
> </body>
> </html>
> END;
>
> ?>
> ========================
>
> As you can see, nothing special there. No array's, vars, database things, or
> whatsoever.
> The reason why I checked this is because I have several more complex
> scripts. With these scripts, I run out of memory pretty fast (have only 64MB
> installed in my server

).. I have to restart the apache server in order
> to get the memory back..
>
> Anyone an idea why this happens? (and how this can be solved?)
>
> With regards,
> Marcel

Just out of curiousity, if the page does not have the PHP script, do you still
run out of memory?

Todd

07-01-2007, 3:33 PM

> Just out of curiousity, if the page does not have the PHP script, do you
still
> run out of memory?
>
> Todd

If I just load a test.html, containing the same code as listed earlier,
there doesn't seem to be memory loss.

As for what Ivo Swartjes said, I got the echo thing from the php site. I
have it inside the php part because sometimes I want to use variables
there.. I can't believe that could be the cause of memory loss..

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