3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface Sniff { public function process(File $phpcsFile, $stackPtr); } class MySniff implements Sniff { public function process(File $phpcsFile, $stackPtr) : ?int { } }
based on nVY9b
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.26, 7.4.0 - 7.4.13, 8.0.0 - 8.0.3
Output for 7.0.0 - 7.0.33
Parse error: syntax error, unexpected '?' in /in/I0NaA on line 8
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, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/I0NaA on line 8
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected ':', expecting '{' or ';' in /in/I0NaA on line 8
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING in /in/I0NaA on line 3
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/I0NaA on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/I0NaA on line 3
Process exited with code 255.