Php array slice () function

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(PHP 4 , PHP 5)

array_slice -- Extract a slice of the array

Syntax

array array_slice ( array array, int offset [, int length [, bool preserve_keys]] )

array_slice() returns the sequence of elements from the array array as specified by the offset and length parameters.

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.

If length is given and is positive, then the sequence will have that many elements in it. 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.

Note that array_slice() will reset the array keys by default. Since PHP 5.0.2, you can change this behaviour by setting preserve_keys to TRUE.

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
)

See also array_splice() and unset().

Php array slice Function syntax tag

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Php array slice syntax tutorial

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