3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [['xxx', 3], ['yyy', 2]]; var_export( array_merge( ...array_map( fn($row) => array_fill(0, $row[1], [$row[0]]), $array ) ) );
Output for 8.1.32, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0
array ( 0 => array ( 0 => 'xxx', ), 1 => array ( 0 => 'xxx', ), 2 => array ( 0 => 'xxx', ), 3 => array ( 0 => 'yyy', ), 4 => array ( 0 => 'yyy', ), )
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:
89.94 ms | 407 KiB | 5 Q