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<?php class RenderEngine { private $blocks = []; public function block($name, $callback) { $this->blocks[$name] = $callback; } public function draw($name, array $args) { call_user_func_args($this->blocks[$name], $args); } } $t = new RenderEngine(); ?> <?php $t->block('article', function ($article) { ?> <?=$article;?> <?php }); ?> <?=$t->draw('article', ['hello']);?>
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Call to undefined function call_user_func_args() in /in/kE8Y4:11 Stack trace: #0 /in/kE8Y4(22): RenderEngine->draw('article', Array) #1 {main} thrown in /in/kE8Y4 on line 11
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38
Fatal error: Call to undefined function call_user_func_args() in /in/kE8Y4 on line 11
Process exited with code 255.

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