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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 git.master, git.master_jit, rfc.property-hooks
01234bla bla xxx bla *xxx bla bla **xxx bla bla ***xxx bla bla ****xxx

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