3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo(sprintf("('1%1$\')", 'a')); echo(sprintf("('1%\')", 'a','b')); echo(sprintf("('1%ab", 'a','b')); echo(sprintf("('1%)a", 'a','b'));
based on f2t6s
Output for 4.3.0 - 7.2.0
('1')('1')('1b('1a