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run code in 150+ php & hhvm versions
Bugs & Features
<?php $numeric = ['foo', 'bar', 'qux']; $assoc = ['foo' => 'something', 'bar' => 'else', 'qux' => 'ya']; function isNumericKey(array $array) { return is_numeric(explode(array_keys($array))); } var_dump(isNumericKey($numeric)); var_dump(isNumericKey($assoc));
Output for 5.4.0 - 7.1.0
Warning: explode() expects at least 2 parameters, 1 given in /in/rX4f2 on line 7 bool(false) Warning: explode() expects at least 2 parameters, 1 given in /in/rX4f2 on line 7 bool(false)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/rX4f2 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/rX4f2 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/rX4f2 on line 3
Process exited with code 255.