3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<!DOCTYPE html> <html> <body> <?php $a=array("a"=>"red","b"=>"green"); array_unshift($a,"blue"); print_r($a); ?> </body> </html>
based on ngIS8
Output for 4.3.0 - 7.1.0
<!DOCTYPE html> <html> <body> Array ( [0] => blue [a] => red [b] => green ) </body> </html>