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<?php $str = "abcdefgh"; $ass_arr = array(); $ass_arr["foo"] = "bar"; $str = preg_replace_callback("/[aeiou]/", function($matches){ $ass_arr["bar"] = "baz"; return "x"; }, $str); var_dump($str); var_dump($ass_arr);
Output for git.master, git.master_jit, rfc.property-hooks
string(8) "xbcdxfgh" array(1) { ["foo"]=> string(3) "bar" }

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