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run code in 150+ php & hhvm versions
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<?php $one = [ "one" => [ "rawr1" => "sweet1" ], "two" => [ "rawr2" => "sweet2" ], "three" => [ "rawr3" => "sweet3" ] ]; $keys = ["one", "three"]; var_dump(array_intersect_key($one, $keys)); var_dump(array_intersect_assoc($one, $keys)); var_dump(array_intersect($one, $keys));
based on X7WJt
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
array(0) { } array(0) { } Notice: Array to string conversion in /in/g2KSD on line 18 Notice: Array to string conversion in /in/g2KSD on line 18 Notice: Array to string conversion in /in/g2KSD on line 18 Notice: Array to string conversion in /in/g2KSD on line 18 Notice: Array to string conversion in /in/g2KSD on line 18 Notice: Array to string conversion in /in/g2KSD on line 18 Notice: Array to string conversion in /in/g2KSD on line 18 array(0) { }
Output for hhvm-3.10.0 - 3.13.2
array(0) { } array(0) { } Notice: Array to string conversion in /in/g2KSD on line 18 Notice: Array to string conversion in /in/g2KSD on line 18 Notice: Array to string conversion in /in/g2KSD on line 18 array(0) { }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/g2KSD on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/g2KSD on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/g2KSD on line 3
Process exited with code 255.