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<?php interface SomeThing{} echo "Itnerface exists".interface_exists(SomeThing); echo "class exists".class_exists(SomeThing);
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
Fatal error: Uncaught Error: Undefined constant "SomeThing" in /in/L2sY6:7 Stack trace: #0 {main} thrown in /in/L2sY6 on line 7
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant SomeThing - assumed 'SomeThing' (this will throw an Error in a future version of PHP) in /in/L2sY6 on line 7 Itnerface exists1 Warning: Use of undefined constant SomeThing - assumed 'SomeThing' (this will throw an Error in a future version of PHP) in /in/L2sY6 on line 8 class exists
Output for 5.0.2 - 5.0.5, 5.1.0 - 5.1.6, 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, 7.1.0 - 7.1.20
Notice: Use of undefined constant SomeThing - assumed 'SomeThing' in /in/L2sY6 on line 7 Itnerface exists1 Notice: Use of undefined constant SomeThing - assumed 'SomeThing' in /in/L2sY6 on line 8 class exists
Output for 5.0.0 - 5.0.1
Fatal error: Call to undefined function interface_exists() in /in/L2sY6 on line 7
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/L2sY6 on line 4
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 in /in/L2sY6 on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/L2sY6 on line 4
Process exited with code 255.

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