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<?php class Blah { public function blahblah() { if (count($this->undefinedProperty) > 0) { print 'good times'; } } } $blah = new Blah(); $blah->blahblah();
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Warning: Undefined property: Blah::$undefinedProperty in /in/0rD1R on line 6 Fatal error: Uncaught TypeError: count(): Argument #1 ($value) must be of type Countable|array, null given in /in/0rD1R:6 Stack trace: #0 /in/0rD1R(13): Blah->blahblah() #1 {main} thrown in /in/0rD1R on line 6
Process exited with code 255.
Output for 8.0.0 - 8.0.9
Warning: Undefined property: Blah::$undefinedProperty in /in/0rD1R on line 6 Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, null given in /in/0rD1R:6 Stack trace: #0 /in/0rD1R(13): Blah->blahblah() #1 {main} thrown in /in/0rD1R on line 6
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined property: Blah::$undefinedProperty in /in/0rD1R on line 6 Warning: count(): Parameter must be an array or an object that implements Countable in /in/0rD1R on line 6
Output for 7.3.32 - 7.3.33
Warning: count(): Parameter must be an array or an object that implements Countable in /in/0rD1R on line 6
Output for 5.2.6 - 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 - 7.1.20
Notice: Undefined property: Blah::$undefinedProperty in /in/0rD1R on line 6
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.5
Notice: Undefined property: Blah::$undefinedProperty in /in/0rD1R on line 6
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/0rD1R on line 5
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/0rD1R on line 5
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/0rD1R on line 5
Process exited with code 255.

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