3v4l.org

run code in 300+ PHP versions simultaneously
<?php function set($name, callable $spec) { $registry[$name] = $spec; $converted[$name] = false; } class Hello { public function __invoke() { echo 'From invoke'; } } $hello = new Hello(); set('hello', $hello);
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 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, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Catchable fatal error: Argument 2 passed to set() must be an instance of callable, instance of Hello given, called in /in/5MqQf on line 15 and defined in /in/5MqQf on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Class 'callable' not found in /in/5MqQf on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '&' or T_VARIABLE or T_CONST in /in/5MqQf on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting '&' or T_VARIABLE or T_CONST in /in/5MqQf on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'&'' or `T_VARIABLE' or `T_CONST' in /in/5MqQf on line 2
Process exited with code 255.
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