3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = [[0=>0,1=>1],[2=>3,3=>4],[4=>5,5=>6]]; var_dump($arr); foreach($arr as $row) { list($key, $value) = $row; echo $key .' -> '. $value .'\n'; } foreach ($arr as list($key, $value)) { echo $key .' -> '. $value .'\n'; }
Output for 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) { [0]=> array(2) { [0]=> int(0) [1]=> int(1) } [1]=> array(2) { [2]=> int(3) [3]=> int(4) } [2]=> array(2) { [4]=> int(5) [5]=> int(6) } } 0 -> 1\n Warning: Undefined array key 0 in /in/L42Xl on line 7 Warning: Undefined array key 1 in /in/L42Xl on line 7 -> \n Warning: Undefined array key 0 in /in/L42Xl on line 7 Warning: Undefined array key 1 in /in/L42Xl on line 7 -> \n0 -> 1\n Warning: Undefined array key 0 in /in/L42Xl on line 11 Warning: Undefined array key 1 in /in/L42Xl on line 11 -> \n Warning: Undefined array key 0 in /in/L42Xl on line 11 Warning: Undefined array key 1 in /in/L42Xl on line 11 -> \n
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
array(3) { [0]=> array(2) { [0]=> int(0) [1]=> int(1) } [1]=> array(2) { [2]=> int(3) [3]=> int(4) } [2]=> array(2) { [4]=> int(5) [5]=> int(6) } } 0 -> 1\n Notice: Undefined offset: 0 in /in/L42Xl on line 7 Notice: Undefined offset: 1 in /in/L42Xl on line 7 -> \n Notice: Undefined offset: 0 in /in/L42Xl on line 7 Notice: Undefined offset: 1 in /in/L42Xl on line 7 -> \n0 -> 1\n Notice: Undefined offset: 0 in /in/L42Xl on line 11 Notice: Undefined offset: 1 in /in/L42Xl on line 11 -> \n Notice: Undefined offset: 0 in /in/L42Xl on line 11 Notice: Undefined offset: 1 in /in/L42Xl on line 11 -> \n
Output for 7.3.32 - 7.3.33
array(3) { [0]=> array(2) { [0]=> int(0) [1]=> int(1) } [1]=> array(2) { [2]=> int(3) [3]=> int(4) } [2]=> array(2) { [4]=> int(5) [5]=> int(6) } } 0 -> 1\n -> \n -> \n0 -> 1\n -> \n -> \n
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
array(3) { [0]=> array(2) { [0]=> int(0) [1]=> int(1) } [1]=> array(2) { [2]=> int(3) [3]=> int(4) } [2]=> array(2) { [4]=> int(5) [5]=> int(6) } } 0 -> 1\n Notice: Undefined offset: 1 in /in/L42Xl on line 7 Notice: Undefined offset: 0 in /in/L42Xl on line 7 -> \n Notice: Undefined offset: 1 in /in/L42Xl on line 7 Notice: Undefined offset: 0 in /in/L42Xl on line 7 -> \n0 -> 1\n Notice: Undefined offset: 1 in /in/L42Xl on line 11 Notice: Undefined offset: 0 in /in/L42Xl on line 11 -> \n Notice: Undefined offset: 1 in /in/L42Xl on line 11 Notice: Undefined offset: 0 in /in/L42Xl on line 11 -> \n
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected 'list' (T_LIST) in /in/L42Xl on line 11
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/L42Xl on line 3
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/L42Xl on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/L42Xl on line 3
Process exited with code 255.
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