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<?php function abc($a, $b) { $a = array_map('intval', str_split($a)); var_dump($a); } abc(12, 3);
based on vNlhi
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0beta1
array(2) { [0]=> int(1) [1]=> int(2) }