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<?php $arr = ['one', 'two', 'three', 'four', 'five']; echo 'foreach on $arr' . PHP_EOL; foreach($arr as $elem) { var_dump(current($arr)); } echo PHP_EOL . 'foreach on $refArr' . PHP_EOL; $refArr = &$arr; foreach($refArr as $elem) { var_dump(current($arr)); } echo 'substituting array during iteration' . PHP_EOL; $refArr = &$arr; foreach($refArr as $elem) { if ($elem == 'three') { $arr = [1, 2, 3, 4, 5]; } echo $elem . PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
foreach on $arr string(3) "one" string(3) "one" string(3) "one" string(3) "one" string(3) "one" foreach on $refArr string(3) "one" string(3) "one" string(3) "one" string(3) "one" string(3) "one" substituting array during iteration one two three four five

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