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<?php $arr = array( 'a' => 'A', 'b' => 'B', 'c' => 'C'); var_dump($arr); foreach ($arr as &$val) { if ($val == 'B') { unset($val); } } var_dump($arr); foreach ($arr as &$val) { if ($val == 'B') { $val = 'X'; } } var_dump($arr);
Output for 5.2.1 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array(3) { ["a"]=> string(1) "A" ["b"]=> string(1) "B" ["c"]=> string(1) "C" } array(3) { ["a"]=> string(1) "A" ["b"]=> string(1) "B" ["c"]=> &string(1) "C" } array(3) { ["a"]=> string(1) "A" ["b"]=> string(1) "X" ["c"]=> &string(1) "C" }
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
array(3) { ["a"]=> string(1) "A" ["b"]=> string(1) "B" ["c"]=> string(1) "C" } array(3) { ["a"]=> &string(1) "A" ["b"]=> string(1) "B" ["c"]=> &string(1) "C" } array(3) { ["a"]=> &string(1) "A" ["b"]=> &string(1) "X" ["c"]=> &string(1) "C" }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/87F4m on line 10
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/87F4m on line 10
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/87F4m on line 10
Process exited with code 255.

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