3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string='bla bla xxx bla *xxx bla bla **xxx bla bla ***xxx bla bla ****xxx'; $search='xxx'; $char='*'; preg_replace_callback( '/(' . preg_quote($char) . '*)' . $search . '/', function($matches) { print strlen($matches[1]); if(strlen($matches[1]) % 2 !== 0) { return $matches[1] . '*'; } }, $string ); print $string;
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
01234bla bla xxx bla *xxx bla bla **xxx bla bla ***xxx bla bla ****xxx
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/d4Rcp on line 9
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/d4Rcp on line 9
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/d4Rcp on line 9
Process exited with code 255.
preferences:
231.78 ms | 401 KiB | 326 Q