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<?php $array = [ [ 'a' => 1, 'b' => 2, 'c' => 3], [ 'a' => 4, 'b' => 5, 'c' => 6], [ 'a' => 7, 'b' => 8, 'c' => 9] ]; $column = array_column($array, 'a'); foreach ($array as &$val) { unset($val['a']); } echo "Array output (by 'for'):\n"; for ($i = 0; $i < 3; ++$i) { echo implode(', ', $array[$i]) . "\n"; } echo "Array output (by 'foreach'):\n"; foreach ($array as $val) { echo implode(', ', $array[$i]) . "\n"; } echo "Array output (by $i):\n"; for ($i = 0; $i < 3; ++$i) { echo implode(', ', $array[$i]) . "\n"; }
Output for 8.1.24 - 8.1.28, 8.2.11 - 8.2.18, 8.3.0 - 8.3.6
Array output (by 'for'): 2, 3 5, 6 8, 9 Array output (by 'foreach'): Warning: Undefined array key 3 in /in/tDH1N on line 20 Fatal error: Uncaught TypeError: implode(): Argument #1 ($array) must be of type array, string given in /in/tDH1N:20 Stack trace: #0 /in/tDH1N(20): implode(', ', NULL) #1 {main} thrown in /in/tDH1N on line 20
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.23, 8.2.0 - 8.2.10
Array output (by 'for'): 2, 3 5, 6 8, 9 Array output (by 'foreach'): Warning: Undefined array key 3 in /in/tDH1N on line 20 Fatal error: Uncaught TypeError: implode(): Argument #1 ($pieces) must be of type array, string given in /in/tDH1N:20 Stack trace: #0 /in/tDH1N(20): implode(', ', NULL) #1 {main} thrown in /in/tDH1N on line 20
Process exited with code 255.
Output for 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.29 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Array output (by 'for'): 2, 3 5, 6 8, 9 Array output (by 'foreach'): Notice: Undefined offset: 3 in /in/tDH1N on line 20 Warning: implode(): Invalid arguments passed in /in/tDH1N on line 20 Notice: Undefined offset: 3 in /in/tDH1N on line 20 Warning: implode(): Invalid arguments passed in /in/tDH1N on line 20 Notice: Undefined offset: 3 in /in/tDH1N on line 20 Warning: implode(): Invalid arguments passed in /in/tDH1N on line 20 Array output (by 3): 2, 3 5, 6 5, 6
Output for 7.3.32 - 7.3.33, 7.4.26
Array output (by 'for'): 2, 3 5, 6 8, 9 Array output (by 'foreach'): Warning: implode(): Invalid arguments passed in /in/tDH1N on line 20 Warning: implode(): Invalid arguments passed in /in/tDH1N on line 20 Warning: implode(): Invalid arguments passed in /in/tDH1N on line 20 Array output (by 3): 2, 3 5, 6 5, 6
Output for 5.4.0 - 5.4.45
Fatal error: Call to undefined function array_column() in /in/tDH1N on line 8
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/tDH1N on line 2
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/tDH1N on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/tDH1N on line 2
Process exited with code 255.
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