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To: Karl =?ISO-8859-1?Q?Pfl=E4sterer?= <k@rl.pflaesterer.de>
Cc: internals@lists.php.net
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Date: Wed, 30 Jan 2008 18:43:38 -0200
Message-ID: <1201725818.5831.8.camel@pena>
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Subject: Re: [PHP-DEV]  Bug in pcre (pcre.backtrack_limit)?
From: felipensp@gmail.com (Felipe Pena)

Hello

Em Qua, 2008-01-30 às 20:57 +0100, Karl Pflästerer escreveu:
> Hi,
> when pcre.backtrack_limit is reached with preg_replace() the subject
> string gets truncated to a string of length zero.

I changed the phrase about the return value (3 weeks ago) in
pcre_replace(), it can be seen at http://docs.php.net/preg-replace, i
added "or NULL if an error occurred."

<?php
ini_set("pcre.backtrack_limit",10);
$s = str_repeat("a", 9999);
var_dump(preg_replace("/a(.*?)b/", "\$1", $s));
var_dump(preg_last_error()); // 2 = PREG_BACKTRACK_LIMIT_ERROR

Output:
NULL
int(2)

-- 
Regards,
Felipe Pena.