3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_replace('/[\\\]+/', '\\', 'Doctrine\DBAL')); var_dump(preg_replace('/[\\\]+/', '\\', 'Doctrine\\DBAL')); var_dump(preg_replace('/[\\\]+/', '\\', 'Doctrine\\\DBAL')); var_dump(preg_replace('/[\\\]+/', '\\', 'Doctrine\\\\DBAL')); var_dump(preg_replace('/[\\\]+/', '\\', 'Doctrine\\\\\DBAL')); var_dump(preg_replace('/[\\\]+/', '\\', 'Doctrine\\\\\\DBAL')); var_dump(preg_replace('/[\\\]+/', '\\', 'Doctrine\\\\\\\DBAL')); var_dump(preg_replace('/[\\\]+/', '\\', 'Doctrine\\\\\\\\DBAL')); var_dump(preg_replace('/[\\\]+/', '\\', 'Doctrine\\\\\\\\\DBAL'));
Output for 4.3.0 - 7.2.0
string(13) "Doctrine\DBAL" string(13) "Doctrine\DBAL" string(13) "Doctrine\DBAL" string(13) "Doctrine\DBAL" string(13) "Doctrine\DBAL" string(13) "Doctrine\DBAL" string(13) "Doctrine\DBAL" string(13) "Doctrine\DBAL" string(13) "Doctrine\DBAL"