3v4l.org

run code in 300+ PHP versions simultaneously
<?php $test = []; $test[] = 1; $test[] = 2; echo '|' . trim(join($test, ', ')) . '|';
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught TypeError: join(): Argument #2 ($array) must be of type ?array, string given in /in/pUsJY:5 Stack trace: #0 /in/pUsJY(5): join(Array, ', ') #1 {main} thrown in /in/pUsJY on line 5
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Deprecated: join(): Passing glue string after array is deprecated. Swap the parameters in /in/pUsJY on line 5 |1, 2|
Output for 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 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
|1, 2|
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/pUsJY on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/pUsJY on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/pUsJY on line 2
Process exited with code 255.

preferences:
304.86 ms | 401 KiB | 448 Q