3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '/block/2/page/2/block/3/page/4'; var_export( preg_split('~(?=/block/)~', $str, 0, PREG_SPLIT_NO_EMPTY) );
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array ( 0 => '/block/2/page/2', 1 => '/block/3/page/4', )
preferences:
105.75 ms | 1250 KiB | 4 Q