3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { private $x = 1; private $y = 2; } $array = new foo; vprintf('%s < %s',$array);
Output for 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 TypeError: vprintf(): Argument #2 ($values) must be of type array, foo given in /in/rXPtL:11 Stack trace: #0 /in/rXPtL(11): vprintf('%s < %s', Object(foo)) #1 {main} thrown in /in/rXPtL 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 - 5.6.40, 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
1 < 2

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