3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public function __toString() : string { return 'bar'; } } echo (new Foo())->__toString(), PHP_EOL, (new Foo())->__toString()[2], PHP_EOL, (new Foo()), PHP_EOL, (new Foo())[2];
Output for 7.0.0 - 7.0.20, 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.14
bar r bar Fatal error: Uncaught Error: Cannot use object of type Foo as array in /in/MC8Rl:14 Stack trace: #0 {main} thrown in /in/MC8Rl on line 14
Process exited with code 255.
Output for 5.6.0 - 5.6.25
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/MC8Rl on line 5
Process exited with code 255.
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