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<?php function array_group($cond, $arr) { if (empty($arr)) return []; $e = array_shift($arr); $g = [$e]; while($cond($e, reset($arr))) { $g[] = array_shift($arr); } return array_merge([$g], array_group($cond, $arr)); } function it($m,$p){echo ($p?'OK':'NO')." It $m\n";} function eq($a,$b) {return $a==$b;} echo it ('groups', array_group('eq', [1,5,5,6,6,6,7,9]) == [[1],[5,5],[6,6,6],[7],[9]]); echo it ('groups by comparing with first item of each group', array_group(function ($a, $b) { return ($a == ($b-1)) || ($a==$b); }, [[1, 1, 2], [3], [1]]));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
OK It groups Fatal error: Uncaught TypeError: Unsupported operand types: array - int in /in/lMgoB:23 Stack trace: #0 /in/lMgoB(10): {closure}(Array, Array) #1 /in/lMgoB(23): array_group(Object(Closure), Array) #2 {main} thrown in /in/lMgoB on line 23
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
OK It groups Fatal error: Uncaught Error: Unsupported operand types in /in/lMgoB:23 Stack trace: #0 /in/lMgoB(10): {closure}(Array, Array) #1 /in/lMgoB(23): array_group(Object(Closure), Array) #2 {main} thrown in /in/lMgoB on line 23
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
OK It groups Fatal error: Unsupported operand types in /in/lMgoB on line 23
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/lMgoB on line 5
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, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/lMgoB on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/lMgoB on line 5
Process exited with code 255.
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