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<?php $a = 0; function f(&$arg):null { $arg++; } var_dump(f($a)); ?>
Output for 7.1.0 - 7.1.23, 7.2.0 - 7.2.11
Fatal error: Cannot use 'null' as class name as it is reserved in /in/lWrC6 on line 3
Process exited with code 255.
Output for 5.6.38
Parse error: syntax error, unexpected ':', expecting '{' in /in/lWrC6 on line 3
Process exited with code 255.
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174.96 ms | 1395 KiB | 44 Q