memory_limit applies for the duration of a single script.  Each script will 
not be allowed to obtain more than 8MB;  So, the problem you're having 
originates someplace else (perhaps other parts of PHP grow to consume more 
memory, e.g., persistent resource tables or something of the sort).


At 17:52 27/6/2001, Swift wrote:
>Warning: Could not execute mail delivery program in
>/local/Web/sites/phpweb/bugs.php on line 419
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>Please send this page in a mail to [EMAIL PROTECTED] manually.
>Hi there!
>As far as I understand, the option "memory_limit" sets the mem-limit for
>ONE script.
>I installed PHP as a Apache module and I set the memory_limit to 16M
>(via php.ini).
>When I allocate 8M of memory, all works fine. But when two different
>scripts each allocate 8M, I will get sometimes the following message:
>Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to
>allocate 4194304 bytes) in /usr/local/httpd/htdocs/testxx.php on line 6
>Both scripts (testx.php and testxx.php) contain the following code:
>   $str = "x";
>   for($i=0; $i<23; $i++)
>   {
>     $str .= $str;
>     echo strlen($str) . "<br>";
>   }
>First, 1 byte will be allocated, then 2, then 4 and so on. The last
>allocated string has a size of 8M.
>It's a little difficult to reproduce the problem because I have to call
>both scripts exactly at the same time from my browser. But, as I said,
>sometimes I get the described error-message.
>My question is: Is this normal and memory_limit sets the limit for ALL
>scripts that are currently running or is this a bug?
>Thanks in advance!
>  ... tobias wiersch from germany
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Zeev Suraski <[EMAIL PROTECTED]>
CTO &  co-founder, Zend Technologies Ltd.

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