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<?php $a = 1234455; $b = 54456; function digits_in_both($x, $y) { $in_both = []; $split_y = str_split($y); foreach(str_split($x) as $n) { $key = array_search($n, $split_y); if($key !== false) { $in_both[] = $n; unset($split_y[$key]); } } return $in_both; } $in_both = digits_in_both(123445, 54456); var_export($in_both); var_dump(count($in_both));
Output for git.master, git.master_jit, rfc.property-hooks
array ( 0 => '4', 1 => '4', 2 => '5', )int(3)

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