3v4l.org

run code in 200+ PHP versions simultaneously
<?php class Walker { function walk( $elements, $max_depth, ...$args ) { echo 1; } } class My_Walker extends Walker { function walk( $elements, $max_depth ) { echo 2; } } $a = new My_Walker(); $a->walk( 1, 2 );

Shows result from various feature-branches currently under review from the php developers. Contact me to have additional branches featured.

Output for branch php-master
Fatal error: Declaration of My_Walker::walk($elements, $max_depth) must be compatible with Walker::walk($elements, $max_depth, ...$args) in /in/2iS9g on line 10
Process exited with code 255.
Output for branch php-master+opcache
Fatal error: Declaration of My_Walker::walk($elements, $max_depth) must be compatible with Walker::walk($elements, $max_depth, ...$args) in /in/2iS9g on line 10
Process exited with code 255.
Output for branch php-master+jit
Fatal error: Declaration of My_Walker::walk($elements, $max_depth) must be compatible with Walker::walk($elements, $max_depth, ...$args) in /in/2iS9g on line 10
Process exited with code 255.

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page