Hi Gustavo, I didn't look into the code yet (and really don't like to do it), but we just noticed terrible performance degradation of strtr() function between 5.4.11 and 5.4.15 coming probably after your changes.
$ cat strtr.php <?php function foo() { for ($i = 0; $i < 100000; $i++) { strtr("abcdefgh", array("a"=>"11", "g"=>"22")); } } foo(); $ time sapi/cli/php.5.4.11 strtr.php real 0m0.082s user 0m0.071s sys 0m0.010s $ time sapi/cli/php.5.4.15 strtr.php real 0m0.594s user 0m0.584s sys 0m0.007s 7 times slower :( Could you place take a look. Thanks. Dmitry.