3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test($array) { try { return is_associative_array($array); } catch (Exception $e) { echo $e->getMessage(); return 'error'; } } function is_associative_array($array) { // your fav method here } //// non-array - adjust according to your preferred error handling technique //assert(test(null)); //assert(test('')); //assert(test(0)); //assert(test(false)); //assert(test(new stdClass)); // other assert(test([]) === true); // empty array assert(test(['' => '']) === true); // random test assert(test([0 => '']) === false); // random test assert(test([1 => 'a']) === true); // random test assert(test([NAN, 1 , 2, 'a', 'b']) === false); // random test // numeric keys assert(test([null, 'a', 'b']) === false); // proper indexed array; also, to catch wrong isset usage assert(test([1 => 'a', 2 => 'b', 3 => 'c']) === true); // sequential but not 0-based assert(test([-1 => '', 0 => '', 1 => 'a']) === true); // sequential but not 0-based assert(test([0 => '', 2 => 'b', 3 => 'c']) === true); // 1 index missing assert(test([0 => '', 2 => 'b', 1 => 'a']) === true); // numeric but unordered assert(test([NAN]) === false); assert(test([NAN => '']) === true); // string keys assert(test(['' => '', 'a' => 'a', 'b' => 'b']) === true); // proper associative array // mixed keys assert(test(['' => '', 1 => 'a', 2 => 'b']) === true); // first key string but rest not; also, associative even though '' == 0 assert(test([0 => '', 1 => 'a', 'b' => 'b']) === true); // first key numeric but rest not // numeric string keys assert(test([' 0' => '']) === true); // associative even though ' 0' == 0 assert(test(['00' => '']) === true); // associative even though '00' == 0 assert(test(['0*' => '']) === true); // associative even though '0*' == 0 assert(test(['0.0' => '']) === true); // associative even though '0.0' == 0.0 assert(test(['0x0' => '']) === true); // associative even though '0x0' == 0 assert(test(['0e0' => '']) === true); // associative even though '0e0' == 0
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught AssertionError: assert(test([]) === true) in /in/q4Yhj:29 Stack trace: #0 /in/q4Yhj(29): assert(false, 'assert(test([])...') #1 {main} thrown in /in/q4Yhj on line 29
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: assert(): assert(test([]) === true) failed in /in/q4Yhj on line 29 Warning: assert(): assert(test(['' => '']) === true) failed in /in/q4Yhj on line 30 Warning: assert(): assert(test([0 => '']) === false) failed in /in/q4Yhj on line 31 Warning: assert(): assert(test([1 => 'a']) === true) failed in /in/q4Yhj on line 32 Warning: assert(): assert(test([NAN, 1, 2, 'a', 'b']) === false) failed in /in/q4Yhj on line 33 Warning: assert(): assert(test([null, 'a', 'b']) === false) failed in /in/q4Yhj on line 36 Warning: assert(): assert(test([1 => 'a', 2 => 'b', 3 => 'c']) === true) failed in /in/q4Yhj on line 37 Warning: assert(): assert(test([-1 => '', 0 => '', 1 => 'a']) === true) failed in /in/q4Yhj on line 38 Warning: assert(): assert(test([0 => '', 2 => 'b', 3 => 'c']) === true) failed in /in/q4Yhj on line 39 Warning: assert(): assert(test([0 => '', 2 => 'b', 1 => 'a']) === true) failed in /in/q4Yhj on line 40 Warning: assert(): assert(test([NAN]) === false) failed in /in/q4Yhj on line 41 Warning: assert(): assert(test([NAN => '']) === true) failed in /in/q4Yhj on line 42 Warning: assert(): assert(test(['' => '', 'a' => 'a', 'b' => 'b']) === true) failed in /in/q4Yhj on line 45 Warning: assert(): assert(test(['' => '', 1 => 'a', 2 => 'b']) === true) failed in /in/q4Yhj on line 48 Warning: assert(): assert(test([0 => '', 1 => 'a', 'b' => 'b']) === true) failed in /in/q4Yhj on line 49 Warning: assert(): assert(test([' 0' => '']) === true) failed in /in/q4Yhj on line 52 Warning: assert(): assert(test(['00' => '']) === true) failed in /in/q4Yhj on line 53 Warning: assert(): assert(test(['0*' => '']) === true) failed in /in/q4Yhj on line 54 Warning: assert(): assert(test(['0.0' => '']) === true) failed in /in/q4Yhj on line 55 Warning: assert(): assert(test(['0x0' => '']) === true) failed in /in/q4Yhj on line 56 Warning: assert(): assert(test(['0e0' => '']) === true) failed in /in/q4Yhj on line 57
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Warning: assert(): Assertion failed in /in/q4Yhj on line 29 Warning: assert(): Assertion failed in /in/q4Yhj on line 30 Warning: assert(): Assertion failed in /in/q4Yhj on line 31 Warning: assert(): Assertion failed in /in/q4Yhj on line 32 Warning: assert(): Assertion failed in /in/q4Yhj on line 33 Warning: assert(): Assertion failed in /in/q4Yhj on line 36 Warning: assert(): Assertion failed in /in/q4Yhj on line 37 Warning: assert(): Assertion failed in /in/q4Yhj on line 38 Warning: assert(): Assertion failed in /in/q4Yhj on line 39 Warning: assert(): Assertion failed in /in/q4Yhj on line 40 Warning: assert(): Assertion failed in /in/q4Yhj on line 41 Warning: assert(): Assertion failed in /in/q4Yhj on line 42 Warning: assert(): Assertion failed in /in/q4Yhj on line 45 Warning: assert(): Assertion failed in /in/q4Yhj on line 48 Warning: assert(): Assertion failed in /in/q4Yhj on line 49 Warning: assert(): Assertion failed in /in/q4Yhj on line 52 Warning: assert(): Assertion failed in /in/q4Yhj on line 53 Warning: assert(): Assertion failed in /in/q4Yhj on line 54 Warning: assert(): Assertion failed in /in/q4Yhj on line 55 Warning: assert(): Assertion failed in /in/q4Yhj on line 56 Warning: assert(): Assertion failed in /in/q4Yhj on line 57
preferences:
240.4 ms | 405 KiB | 330 Q