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<?php $test = array(5 => "bar", 6 => "baz"); function testCallback($item, $arg = false) { return $item; } var_dump( array_map("testCallback", $test), array_map("testCallback", $test, array(true)), );
Output for 7.3.16 - 7.3.33, 7.4.3 - 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(2) { [5]=> string(3) "bar" [6]=> string(3) "baz" } array(2) { [0]=> string(3) "bar" [1]=> string(3) "baz" }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.28, 5.4.0 - 5.4.26, 7.2.29 - 7.2.33
Parse error: syntax error, unexpected ')' in /in/r6fQg on line 12
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected ')' in /in/r6fQg on line 12
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/r6fQg on line 12
Process exited with code 255.

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