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<?php $string = 'blahblah<del>blahblah</del>blahblah'; echo preg_replace_callback('~<del>(.*?)</del>~', function($match) { $replace = str_repeat(' ', mb_strlen($match[1])); return $replace; }, $string);
Output for git.master, git.master_jit, rfc.property-hooks
blahblah blahblah

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