3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(E_ALL); $not_array = false; // Case #1, incorrect: only 'PHP Warning: Undefined array key "nonexistant"' is logged echo (array_key_exists($_REQUEST['nonexistant'], $not_array) ? "yes" : "no");
Output for 8.3.0 - 8.3.4, 8.3.6
Warning: Undefined array key "nonexistant" in /in/iAGg4 on line 8 Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, false given in /in/iAGg4:8 Stack trace: #0 {main} thrown in /in/iAGg4 on line 8
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: Undefined array key "nonexistant" in /in/iAGg4 on line 8 Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, false given in /in/iAGg4:8 Stack trace: #0 {main} thrown in /in/iAGg4 on line 8
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Warning: Undefined array key "nonexistant" in /in/iAGg4 on line 8 Fatal error: Uncaught TypeError: array_key_exists(): Argument #2 ($array) must be of type array, bool given in /in/iAGg4:8 Stack trace: #0 {main} thrown in /in/iAGg4 on line 8
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Notice: Undefined index: nonexistant in /in/iAGg4 on line 8 Warning: array_key_exists() expects parameter 2 to be array, bool given in /in/iAGg4 on line 8 no

preferences:
153.92 ms | 402 KiB | 156 Q