3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function floorDiff(string $input): int { if ($input === '(') { return 1; } if ($input === ')') { return -1; } } assert(floorDiff('(') === 1); assert(floorDiff(')') === -1); assert(floorDiff('()') === 0);
based on KFSL2
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught TypeError: Return value of floorDiff() must be of the type integer, none returned in /in/U5SK8:12 Stack trace: #0 /in/U5SK8(16): floorDiff('()') #1 {main} thrown in /in/U5SK8 on line 12
Process exited with code 255.
Output for 5.3.20 - 5.6.28
Parse error: syntax error, unexpected ':', expecting '{' in /in/U5SK8 on line 3
Process exited with code 255.