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run code in 200+ php & hhvm versions
Bugs & Features
<?php class X { private function z($matches) { var_dump($matches); } public function y($template) { preg_replace_callback('//', [$this, 'z'], $template); } } $x = new X(); $x->y('bla bla [[ hey there ]] dasfasdf werwr');
Output for 5.6.0 - 7.3.0alpha1
array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" } array(1) { [0]=> string(0) "" }