3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo vsprintf('This is a string %s', array(array('Waaa?')));
Output for 4.3.0 - 4.4.9, 5.4.0 - 7.2.0
Notice: Array to string conversion in /in/82kCE on line 3 This is a string Array
Output for 5.0.0 - 5.3.29
This is a string Array