3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo{ public function __call($n,$a){ return $this->$n->call($this,...$a); } } $f=new Foo(); $f->b=function($x){return$x;}; var_dump($f->b(7));
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Deprecated: Creation of dynamic property Foo::$b is deprecated in /in/4n6Em on line 9 int(7)
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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
int(7)
Output for 5.6.0 - 5.6.40
Fatal error: Call to undefined method Closure::call() in /in/4n6Em on line 5
Process exited with code 255.
Output for 5.5.0 - 5.5.38
Parse error: syntax error, unexpected '.' in /in/4n6Em on line 5
Process exited with code 255.
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