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<?php function foo(integer $foo) : integer { return $foo; } foo(123);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Warning: "integer" will be interpreted as a class name. Did you mean "int"? Write "\integer" to suppress this warning in /in/19EIK on line 3 Warning: "integer" will be interpreted as a class name. Did you mean "int"? Write "\integer" to suppress this warning in /in/19EIK on line 3 Fatal error: Uncaught TypeError: foo(): Argument #1 ($foo) must be of type integer, int given, called in /in/19EIK on line 8 and defined in /in/19EIK:3 Stack trace: #0 /in/19EIK(8): foo(123) #1 {main} thrown in /in/19EIK on line 3
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Argument 1 passed to foo() must be an instance of integer, int given, called in /in/19EIK on line 8 and defined in /in/19EIK:3 Stack trace: #0 /in/19EIK(8): foo(123) #1 {main} thrown in /in/19EIK on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
Fatal error: Uncaught TypeError: Argument 1 passed to foo() must be an instance of integer, integer given, called in /in/19EIK on line 8 and defined in /in/19EIK:3 Stack trace: #0 /in/19EIK(8): foo(123) #1 {main} thrown in /in/19EIK on line 3
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/19EIK on line 3
Process exited with code 255.

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