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Bug #3864 EREG(i) uses 30-50% cpu
Submitted: 2000-03-18 00:17 UTC Modified: 2000-04-01 23:38 UTC
From: kevin at nsane dot net Assigned:
Status: Closed Package: Misbehaving function
PHP Version: 3.0.14 OS: FreeBSD
Private report: No CVE-ID: None
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From: kevin at nsane dot net
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 [2000-03-18 00:17 UTC] kevin at nsane dot net 
<pre>
$exp = "<tr><td><a href=\"(.*)\">(.*)</a></td><td align=\"center\">(.*)</td><td>(.*)</td><td align=right><b>(.*)</b></td><td>(.*)</td><td><A HREF=\"(.*)\">(.*)</A></td></tr>";

$af = fopen("http://cgi3.ebay.com/aw-cgi/eBayISAPI.dll?MfcISAPICommand=ViewListedItems&userid=johannah@ccssinc.com&include=0&since=-1&sort=2&rows=50","r");
while (!$end)
{
$line = fgets($af, 2048);
$content .= $line;
$end = feof($af);
}
fclose($af); 

if (ereg($exp,$content,$reg)) {
	echo $reg[2] . "\n";
}
</pre>

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 [2000-03-18 10:48 UTC] kevin at nsane dot net 
I just caved and used preg_match_all. Interestingly enough preg uses 0.1% for the same expression. Hmm...
 [2000-04-01 23:38 UTC] sas at cvs dot php dot net 
Yep, the ereg stuff is very slow. That is due to the implementation, unfortunately it is not easy to fix that.
 
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