3v4l.org

run code in 300+ PHP versions simultaneously
<?php class B { function __toString() { echo (string)__CLASS__; } } class A extends B { function __toString() { echo (string)__CLASS__; } } echo new B(); echo new A();
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
B Fatal error: Uncaught TypeError: B::__toString(): Return value must be of type string, none returned in /in/quJAA:5 Stack trace: #0 /in/quJAA(13): B->__toString() #1 {main} thrown in /in/quJAA on line 5
Process exited with code 255.
Output for 7.4.0 - 7.4.33
B Fatal error: Uncaught Error: Method B::__toString() must return a string value in /in/quJAA:13 Stack trace: #0 {main} thrown in /in/quJAA on line 13
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
B Recoverable fatal error: Method B::__toString() must return a string value in /in/quJAA on line 13
Process exited with code 255.
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20
B Catchable fatal error: Method B::__toString() must return a string value in /in/quJAA on line 13
Process exited with code 255.
Output for 5.0.5, 5.1.0 - 5.1.6
B Fatal error: Method B::__toString() must return a string value in /in/quJAA on line 13
Process exited with code 255.
Output for 5.0.0 - 5.0.4
B
Process exited with code 139.
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
ObjectObject

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