3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface NewI {} class_alias('NewI', 'OldI'); class C1 implements NewI {} class C2 implements OldI {} function fn(NewI) { echo "New: Success!\n"; } function fo(OldI) { echo "Old: Success!\n"; } fn(new C1); fn(new C2); fo(new C1); fo(new C2);
Output for 5.4.0 - 5.4.32
Parse error: syntax error, unexpected ')', expecting '&' or variable (T_VARIABLE) in /in/4dcmP on line 6
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected ')', expecting '&' or T_VARIABLE in /in/4dcmP on line 6
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected ')', expecting '&' or T_VARIABLE in /in/4dcmP on line 6
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/4dcmP on line 2
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/4dcmP on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/4dcmP on line 2
Process exited with code 255.
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