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<?php $a = array(1, 2, 3, 4, 5 ); $step = 2; function myfunc($key, $value) { global $step; if ($key == $step) echo ' $ '; echo "$value "; } array_walk($a, 'myfunc');
Output for git.master, git.master_jit, rfc.property-hooks
0 $ 1 2 3 4

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