3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = ['a' => 1, 'b' => 2]; $arr2 = ['c' => 3, 'd' => 4]; array_push($arr1, ...$arr2); var_export($arr1);
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
Fatal error: Uncaught ArgumentCountError: array_push() does not accept unknown named parameters in /in/BHPSt:5 Stack trace: #0 /in/BHPSt(5): array_push(Array, c: 3, d: 4) #1 {main} thrown in /in/BHPSt on line 5
Process exited with code 255.
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

preferences:
114.64 ms | 407 KiB | 5 Q