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<?php class Foo { public $id; public function __construct(){ static $counter = 0; $this->id = $counter; ++$counter; } } $collection = [new Foo(), new Foo(), new Foo(), new Foo()]; print_r(array_column($collection, 'id'));
Output for 7.0.7 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.13
Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 )
Output for 7.0.0 - 7.0.6
Array ( [0] => 1 [1] => 2 [2] => 3 )
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Array ( )
Output for 5.4.0 - 5.4.45
Fatal error: Call to undefined function array_column() in /in/8Tf8a on line 16
Process exited with code 255.
Output for 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/8Tf8a on line 14
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/8Tf8a on line 14
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/8Tf8a on line 5
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 T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/8Tf8a on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/8Tf8a on line 5
Process exited with code 255.
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