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run code in 300+ PHP versions simultaneously
<?php $o=new C1();/*this is OK, because C1 does not implement anything, it can be declared anywhere.*/ $o=new C2();/*this is NOT ok, because C2 implements something, it must be declared before being used.*/ class C1 /*implements nothing*/ { } class C2 implements Countable{ function count(){} }
based on O47nS
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.31, 7.3.0 - 7.3.19, 7.4.0 - 7.4.8, 8.0.0alpha1 - alpha2
Fatal error: Uncaught Error: Class 'C2' not found in /in/LudAO:3 Stack trace: #0 {main} thrown in /in/LudAO on line 3
Process exited with code 255.
Output for 5.0.0 - 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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Fatal error: Class 'C2' not found in /in/LudAO on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/LudAO on line 8
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 '{' in /in/LudAO on line 8
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/LudAO on line 8
Process exited with code 255.