3v4l.org

run code in 300+ PHP versions simultaneously
<?php class ClassName { public function foo(): self { return new ClassName(); } } $instance = new ClassName(); $instance->foo();
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/lKvL5 on line 5
Process exited with code 255.
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63.51 ms | 406 KiB | 5 Q