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<?php $array = [1,2]; foreach($array as $a) { if ($a == 1) { $array[] = 3; } echo $a . "\n"; } echo "-----\n"; $array = [1,2]; foreach($array as &$a) { if ($a == 1) { $array[] = 3; $array[] = 4; } echo $a . "\n"; } echo "----------\n"; var_dump($array); reset($array); foreach($array as $a) { echo $a . "\n"; }
Output for git.master, git.master_jit, rfc.property-hooks
1 2 ----- 1 2 3 4 ---------- array(4) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> &int(4) } 1 2 3 3

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