3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php /* span :: (a -> Bool) -> [a] -> ([a],[a]) span _ xs@[] = (xs, xs) span p xs@(x:xs') | p x = let (ys,zs) = span p xs' in (x:ys,zs) | otherwise = ([],xs) */ function span($p, $xs) { if (empty($xs)) { return [[], []]; } $xs_ = $xs; $x = array_shift($xs_); if ($p($x)) { list($ys, $zs) = span($p, $xs_); return [array_unshift($ys, $x), $zs]; } return [[], $xs]; } /* groupBy :: (a -> a -> Bool) -> [a] -> [[a]] groupBy _ [] = [] groupBy eq (x:xs) = (x:ys) : groupBy eq zs where (ys,zs) = span (eq x) xs */ function array_group(callable $eq, array $xs) { if (empty($xs)) { return []; } $x = array_shift($xs); list($ys, $zs) = span($eq($x), $xs); } function it($m,$p){echo ($p?'✔︎':'✘')." It $m\n"; if(!$p){$GLOBALS['f']=1;}}function done(){if(@$GLOBALS['f'])die(1);} it('spans elements', span(function ($x) { return $x < 2; }, [1, 2, 3]) === [[1, 2], [3]]);
based on XYHOR
Output for 5.4.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
✘ It spans elements
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/MHFiE on line 12
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/MHFiE on line 12
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/MHFiE on line 12
Process exited with code 255.