3v4l.org

run code in 300+ PHP versions simultaneously
<?php $my_array = ['a','b','c']; $dyn_array = [1, 2, 3]; $num = 2; $result = array_reduce( array_fill(0, $num, $dyn_array), function($carry, $item) { return array_merge($carry, $item); }, $my_array ); print_r($result);
Output for 5.6.0 - 5.6.40, 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, 8.0.0 - 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
Array ( [0] => a [1] => b [2] => c [3] => 1 [4] => 2 [5] => 3 [6] => 1 [7] => 2 [8] => 3 )
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:
170.51 ms | 407 KiB | 5 Q