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<?php $arr = array('1', '2', '3'); foreach ($arr as $key=>&$val) { var_dump($arr); $arr[3] = '999'; echo $val."\n"; } unset($val); var_dump($arr);
Output for 5.2.2 - 7.1.0
array(3) { [0]=> &string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" } 1 array(4) { [0]=> string(1) "1" [1]=> &string(1) "2" [2]=> string(1) "3" [3]=> string(3) "999" } 2 array(4) { [0]=> string(1) "1" [1]=> string(1) "2" [2]=> &string(1) "3" [3]=> string(3) "999" } 3 array(4) { [0]=> string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" [3]=> &string(3) "999" } 999 array(4) { [0]=> string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" [3]=> string(3) "999" }
Output for 5.0.0 - 5.2.1
array(3) { [0]=> &string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" } 1 array(4) { [0]=> &string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" [3]=> string(3) "999" } 2 array(4) { [0]=> &string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" [3]=> string(3) "999" } 3 array(4) { [0]=> string(1) "1" [1]=> string(1) "2" [2]=> string(1) "3" [3]=> string(3) "999" }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/NTCb6 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/NTCb6 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/NTCb6 on line 4
Process exited with code 255.