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<?php function group($cond, $arr) { if (!$arr) return []; $e = array_shift($arr); $g = [$e]; while($cond($e, reset($arr))) { $g[] = array_shift($arr); } return array_merge([$g], group($cond, $arr)); } function it($m,$p){echo ($p?'OK':'NO')." It $m\n";} function eq($a,$b) {return $a==$b;} echo it ('groups', group($eq, [1,5,5,6,6,6,7,9]) == [[1],[5,5],[6,6,6],[7],[9]]); print_r(group($eq, [1,2,3,3,3,4,6]));
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
Warning: Undefined variable $eq in /in/hv2VQ on line 22 Fatal error: Uncaught Error: Value of type null is not callable in /in/hv2VQ:10 Stack trace: #0 /in/hv2VQ(22): group(NULL, Array) #1 {main} thrown in /in/hv2VQ on line 10
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 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: eq in /in/hv2VQ on line 22 Fatal error: Uncaught Error: Function name must be a string in /in/hv2VQ:10 Stack trace: #0 /in/hv2VQ(22): group(NULL, Array) #1 {main} thrown in /in/hv2VQ on line 10
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Fatal error: Uncaught Error: Function name must be a string in /in/hv2VQ:10 Stack trace: #0 /in/hv2VQ(22): group(NULL, Array) #1 {main} thrown in /in/hv2VQ on line 10
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
Notice: Undefined variable: eq in /in/hv2VQ on line 22 Fatal error: Function name must be a string in /in/hv2VQ on line 10
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/hv2VQ 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/hv2VQ on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/hv2VQ on line 5
Process exited with code 255.
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