Newsgroups: php.internals
Path: news.php.net
Xref: news.php.net php.internals:8502
Return-Path: <guru@php.net>
Mailing-List: contact internals-help@lists.php.net; run by ezmlm
Delivered-To: mailing list internals@lists.php.net
Received: (qmail 70113 invoked by uid 1010); 13 Mar 2004 13:28:26 -0000
Delivered-To: ezmlm-scan-internals@lists.php.net
Delivered-To: ezmlm-internals@lists.php.net
Received: (qmail 70089 invoked by uid 1007); 13 Mar 2004 13:28:26 -0000
Message-ID: <20040313132826.70088.qmail@pb1.pair.com>
To: internals@lists.php.net
Date: Sat, 13 Mar 2004 07:28:49 -0600
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.5b) Gecko/20040228 Thunderbird/0.2
X-Accept-Language: en-us, en
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
X-Posted-By: 24.171.96.14
Subject: Infinite loop
From: guru@php.net (Joe Estock)

I know that this would most likely never be used, however someone 
brought this to my attention and I have verified it on PHP 4.3.4 on 
FreeBSD 5.2.1-RELEASE as well as PHP 4.3.4 on Windows XP.

---
while(str_replace(' ', '  ', '  f  dfd  34   dsf ')) {  }
---

This results in PHP obviously becoming stuck in an infinite loop. The 
semantecs of it make complete sense, str_replace will always return TRUE.

My question is this: Shouldn't there be some type of detection for this 
that would at least cause PHP to throw a warning?

Regards,

Joe Estock (guru)