3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = ['a' => '1','b' => 2]; $arr2 = ['h' => 'c','j' => '3']; $result = []; while ($arr1 && $arr2) { $result += array_splice($arr1, 0, 1) + array_splice($arr2, 0, 1); } $result += $arr1 + $arr2; var_export($result);
Output for 7.4.0 - 7.4.33, 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
array ( 'a' => '1', 'h' => 'c', 'b' => 2, 'j' => '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.
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155.74 ms | 407 KiB | 5 Q