PHP separates arrays by specified number

/** * Separates the array by the specified number * @param array $array to be split * Number of groups @param int $groupNum */ Public Function Splitarray ($array, $groupNum) { if (empty ($array)) return array (); The total length of the array $allLength = count ($array); Number $groupNum = Intval ($groupNum); Start position $start = 0; The number of elements in the divided array $enum = (int) ($allLength/$groupNum); Result set $result = Array (); if ($enum > 0) { The portion of an array in which the number of elements is divisible into a fractional group. $firstLength = $enum * $GROUPNUM; $firstArray = Array (); for ($i =0; $i < $firstLength; $i + +) { Array_push ($firstArray, $array [$i]); Unset ($array [$i]); } for ($i =0; $i < $groupNum; $i + +) { From the original array of the specified start position and length of the intercept element into the new array $result [] = Array_slice ($firstArray, $start, $enum); Start position plus number of accumulated elements $start + = $enum; } The remainder of the array is added to the first few items of the result set, respectively $secondLength = $allLength-$firstLength; for ($i =0; $i < $secondLength; $i + +) { Array_push ($result [$i], $array [$i + $firstLength]); } }else{ for ($i =0; $i < $allLength; $i + +) { $result [] = Array_slice ($array, $i, 1); } } return $result; } Copy Code

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