3v4l.org

run code in 300+ PHP versions simultaneously
<?php for ($i = 0, $count = count($arr); $i < $count; $i++) { $var = $arr[$i]; echo $var; }
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: Undefined variable $arr in /in/ilQCv on line 3 Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /in/ilQCv:3 Stack trace: #0 {main} thrown in /in/ilQCv on line 3
Process exited with code 255.
Output for 8.0.0 - 8.0.9
Warning: Undefined variable $arr in /in/ilQCv on line 3 Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, null given in /in/ilQCv:3 Stack trace: #0 {main} thrown in /in/ilQCv on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: arr in /in/ilQCv on line 3 Warning: count(): Parameter must be an array or an object that implements Countable in /in/ilQCv on line 3
Output for 7.3.32 - 7.3.33
Warning: count(): Parameter must be an array or an object that implements Countable in /in/ilQCv on line 3
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Notice: Undefined variable: arr in /in/ilQCv on line 3
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.3
Notice: Undefined variable: arr in /in/ilQCv on line 3

preferences:
285.54 ms | 402 KiB | 455 Q