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<?php $array = [1,2]; foreach($array as &$a) { if ($a == 1) { $array[] = 3; } echo $a . "\n"; } var_dump($array); echo "----------\n"; foreach($array as $a) { var_dump($a); echo $a . "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
1 2 3 array(3) { [0]=> int(1) [1]=> int(2) [2]=> &int(3) } ---------- int(1) 1 int(2) 2 int(2) 2

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