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<?php class Group { private $number = 20; public function __toString() { return "$this->number"; } } $number = new Group(); echo $number, PHP_EOL; echo ++ $number, PHP_EOL;
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
20 Fatal error: Uncaught TypeError: Cannot increment Group in /in/h5J2X:13 Stack trace: #0 {main} thrown in /in/h5J2X on line 13
Process exited with code 255.
Output for 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
20 20
Output for 5.0.0 - 5.0.1
20 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/h5J2X on line 12 PHP_EOL20 Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/h5J2X on line 13 PHP_EOL
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/h5J2X on line 4
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 T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/h5J2X on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/h5J2X on line 4
Process exited with code 255.

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