Re: preg_replace does not replace all occurrences

On 14 March 2011 20:36, Hannes Landeholm <landeholm@gmail.com> wrote: > What is more likely to be wrong? Your understanding of a specific > regex pattern (which happens to be full of escapes making it > incredibly hard to read) or the implementation of preg_replace? > > ~Hannes > > On 14 March 2011 16:18, Martin Scotta <martinscotta@gmail.com> wrote: >> >> I chose the simplest example to show the preg_replace behavior, there are >> better (and safer) ways to scape slash characters. >> Anyways, *is this the expected preg_replace behavior?* >> >>  Martin >> >> <?php >> function test($str) { >>    static $re = '/(^|[^\\\\])\'/'; >>    static $change = '$1\\\''; >> >>    echo $str, PHP_EOL, >>        preg_replace($re, $change, $str), PHP_EOL, PHP_EOL; >> } >> >> test("str '' str"); // bug? >> test("str \\'\\' str"); // ok >> test("'str'"); // ok >> test("\'str\'"); // ok >> >> ---- >> Expected: >> >> str '' str >> str \'\' str >> >> str \'\' str >> str \'\' str >> >> 'str' >> \'str\' >> >> \'str\' >> \'str\' >> >> ---- >> Result: >> >> str '' str >> str \'' str >> >> str \'\' str >> str \'\' str >> >> 'str' >> \'str\' >> >> \'str\' >> \'str\' >> >> >>  Martin Scotta > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > > Did no one see why the regex was wrong? RegexBuddy (a windows app) explains regexes VERY VERY well. -- Richard Quadling Twitter : EE : Zend @RQuadling : e-e.com/M_248814.html : bit.ly/9O8vFY