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The PHP array_slice() function extracts a segment from an array

array_slice($array, $offset [,$length [,$preserve_keys]] );

　array_slice() returns a segment of the array specified by the offset and length parameters.

Serial Number	Parameters and Description
1	array(必填) It specifies an array.
2	offset(必填) If offset is non-negative, the sequence will start from this offset in the array. If offset is negative, the sequence will start from a distance from the end of the array.
3	length(可选) If length is given and is positive, the sequence will have this many units. If length is given and is negative, the sequence will terminate at a distance from the end of the array. If omitted, the sequence will start from offset to the end of the array.
4	preserve_keys(可选) Note that array_slice() will by default reorder and reset the numeric indices of the array. You can change this behavior by setting preserve_keys to TRUE.

It returns a sequence of elements. If the offset parameter is greater than the size of the array, an empty array will be returned.

Return a Segment of Array Elements

Example

<?php
　　　$input = array("a", "b", "c", "d", "e");
　　　
　　　print_r(array_slice($input,",　2,　-1));
　　　print_r(array_slice($input,",　2,　-1, true));
?>

Output Result:

Array
(
　　　　[0]]=>c
　　　　[1]]=>d
)
Array
(
　　　　[2]]=>c
　　　　[3]]=>d
)