PHP 4.0 Bug #10204: fgets causes memory leaks
| From: | pallmall at hushmail dot com | Date: | Fri, 06 Apr 2001 11:54:22 +0000 |
| Subject: | PHP 4.0 Bug #10204: fgets causes memory leaks | ||
| Groups: | php.dev | ||
| Request: | Send a blank email to php-dev+get-51017@lists.php.net to get a copy of this message | ||
From: pallmall@hushmail.com
Operating system: Linux, BSD and Windows
PHP version: 4.0 Latest CVS (06/04/2001)
PHP Bug Type: Sockets related
Bug description: fgets causes memory leaks
Try this script (tested on windows, linux and open BSD(:
<?php
set_time_limit(0);
while (1) {
unset($page);
print "iteration ". ++$c;
$fp = fsockopen("google.com", 80);
fwrite($fp, "GET / HTTP/1.0\r\n\r\n");
while (!feof($fp)) {
$page .= fgets($fp, 1000);
}
}
?>
Run it with top or whatever running and watch the memory usage go up and up (not especially quickly
because the page is small, but in certain situations I've had memory chewage of 1mb/minute).
Now cf.
<?php
set_time_limit(0);
while (1) {
unset($page);
print "iteration ". ++$c;
$fp = fsockopen("google.com", 80);
fwrite($fp, "GET / HTTP/1.0\r\n\r\n");
while (!feof($fp)) {
$page .= fread($fp, 1000);
}
}
?>
Memory usage remains constant here.
[This meant I had to rewrite the readLine method in Net_Socket to use fread instead of fgets.]
--
Edit Bug report at: http://bugs.php.net/?id=10204&edit=1