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run code in 200+ php & hhvm versions
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<?php function test(array $array) { return !(bool)count(array_filter(array_keys($array), 'is_string')); } isDictionary([]);
based on 2781P
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught Error: Call to undefined function isDictionary() in /in/uFWjb:7 Stack trace: #0 {main} thrown in /in/uFWjb on line 7
Process exited with code 255.
Output for 5.4.9 - 5.6.28
Fatal error: Call to undefined function isDictionary() in /in/uFWjb on line 7
Process exited with code 255.
Output for 5.3.19 - 5.3.29
Parse error: syntax error, unexpected '[', expecting ')' in /in/uFWjb on line 7
Process exited with code 255.