(PHP 4, PHP 5)
array_slice — Extract a slice of the array
$array , int $offset [, int $length = NULL [, bool $preserve_keys = false ]] ) array_slice() returns the sequence of elements from the array array as specified by the offset and length parameters.
Note: This function will reset() the array pointer of the input array after use.
arrayThe input array.
offset If offset is non-negative, the sequence will start at that offset in the array. If offset is negative, the sequence will start that far from the end of the array.
length If length is given and is positive, then the sequence will have up to that many elements in it. If the array is shorter than the length, then only the available array elements will be present. If length is given and is negative then the sequence will stop that many elements from the end of the array. If it is omitted, then the sequence will have everything from offset up until the end of the array.
preserve_keys Note that array_slice() will reorder and reset the numeric array indices by default. You can change this behaviour by setting preserve_keys to TRUE.
Returns the slice.
| Version | Description |
|---|---|
| 5.0.2 | The optional preserve_keys parameter was added. |
Example #1 array_slice() examples
<?php
$input = array("a", "b", "c", "d", "e");
$output = array_slice($input, 2); // returns "c", "d", and "e"
$output = array_slice($input, -2, 1); // returns "d"
$output = array_slice($input, 0, 3); // returns "a", "b", and "c"
// note the differences in the array keys
print_r(array_slice($input, 2, -1));
print_r(array_slice($input, 2, -1, true));
?> The above example will output:
Array ( [0] => c [1] => d ) Array ( [2] => c [3] => d )