3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = array( array(0 => "1", 1 => "1"), array(0 => "2", 1 => "2"), ); $arr2 = array( array(0 => "a", 1 => "b"), array(0 => "c", 1 => "d"), ); $result = []; foreach($arr1 as $key=>$value){ $result[array_unique($value)[0]] = $arr2[$key]; } print_r($result);
Output for 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 ( [1] => Array ( [0] => a [1] => b ) [2] => Array ( [0] => c [1] => d ) )
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:
184.54 ms | 407 KiB | 5 Q