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<?php function foo($foo) { $foo->bar++; return $foo; } var_dump(foo($foo));
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
Warning: Undefined variable $foo in /in/MrY1n on line 6 Fatal error: Uncaught Error: Attempt to increment/decrement property "bar" on null in /in/MrY1n:3 Stack trace: #0 /in/MrY1n(6): foo(NULL) #1 {main} thrown in /in/MrY1n on line 3
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined variable: foo in /in/MrY1n on line 6 Warning: Creating default object from empty value in /in/MrY1n on line 3 Notice: Undefined property: stdClass::$bar in /in/MrY1n on line 3 object(stdClass)#1 (1) { ["bar"]=> int(1) }
Output for 7.3.32 - 7.3.33, 7.4.26
Warning: Creating default object from empty value in /in/MrY1n on line 3 object(stdClass)#1 (1) { ["bar"]=> int(1) }
Output for 5.4.0 - 5.4.45
Notice: Undefined variable: foo in /in/MrY1n on line 6 Warning: Creating default object from empty value in /in/MrY1n on line 3 object(stdClass)#1 (1) { ["bar"]=> int(1) }
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Notice: Undefined variable: foo in /in/MrY1n on line 6 Strict Standards: Creating default object from empty value in /in/MrY1n on line 3 object(stdClass)#1 (1) { ["bar"]=> int(1) }
Output for 5.0.0 - 5.0.3
Notice: Undefined variable: foo in /in/MrY1n on line 6 Strict Standards: Creating default object from empty value in /in/MrY1n on line 3 object(stdClass)#1 (1) { ["bar"]=> int(1) }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Notice: Undefined variable: foo in /in/MrY1n on line 6 Notice: Undefined property: bar in /in/MrY1n on line 3 object(stdClass)(1) { ["bar"]=> int(1) }

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