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<?php $assoc = array( "a" => 1, "b" => 0, 0 => 0 ); function is_assoc($in_array){ $test_array = ksort($in_array); return !ctype_digit( implode('', array_keys($test_array)) ); } echo is_assoc($assoc); ?>
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, true given in /in/X8RpN:11 Stack trace: #0 /in/X8RpN(11): array_keys(true) #1 /in/X8RpN(14): is_assoc(Array) #2 {main} thrown in /in/X8RpN on line 11
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Fatal error: Uncaught TypeError: array_keys(): Argument #1 ($array) must be of type array, bool given in /in/X8RpN:11 Stack trace: #0 /in/X8RpN(11): array_keys(true) #1 /in/X8RpN(14): is_assoc(Array) #2 {main} thrown in /in/X8RpN on line 11
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: array_keys() expects parameter 1 to be array, bool given in /in/X8RpN on line 11 Warning: implode(): Invalid arguments passed in /in/X8RpN on line 11 1
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33
Warning: array_keys() expects parameter 1 to be array, boolean given in /in/X8RpN on line 11 Warning: implode(): Invalid arguments passed in /in/X8RpN on line 11 1
Output for 5.2.5 - 5.2.17
Warning: array_keys(): The first argument should be an array in /in/X8RpN on line 11 Warning: implode(): Invalid arguments passed in /in/X8RpN on line 11 1
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.4
Warning: array_keys(): The first argument should be an array in /in/X8RpN on line 11 Warning: implode(): Bad arguments. in /in/X8RpN on line 11 1
Output for 4.3.0 - 4.3.1
Warning: array_keys() [http://www.php.net/function.array-keys]: The first argument should be an array in /in/X8RpN on line 11 Warning: implode() [http://www.php.net/function.implode]: Bad arguments. in /in/X8RpN on line 11 1
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