Php array splice
From w3cyberlearnings
Contents |
PHP function array_splice
This function removes or inserts element of the array and replaces it with new elements. It returns array with the removed elements.
Syntax array_splice
- array: array input
- start: start position for removing or replacing. (Negative number makes the replace starts from the last array element)
- length (optional): Specifies how many elements will be removed. Negative number makes the length count from the last array element.
- array (optional): array to be inserted or replaced.
array_splice(array, start, length, array);
Example 1: Insert element
- When the length is 0, it is for insert.
<?php
$records = array(
'Alyssa',
'Emma',
'Landon',
'Alex',
'Christ',
'Sam',
'Mark');
$insert = array('Paul', 'Paula');
array_splice($records, 2, 0, $insert);
print_r($records);
?>
Output
- Insert Paul and Paula
Array
(
[0] => Alyssa
[1] => Emma
[2] => Paul
[3] => Paula
[4] => Landon
[5] => Alex
[6] => Christ
[7] => Sam
[8] => Mark
)
Example 2: Replace
- Replace Landon with Paul, Alex with Paula
<?php
$records = array(
'Alyssa',
'Emma',
'Landon',
'Alex',
'Christ',
'Sam',
'Mark');
$insert = array('Paul', 'Paula');
array_splice($records, 2, 2, $insert);
print_r($records);
?>
Output
Array
(
[0] => Alyssa
[1] => Emma
[2] => Paul
[3] => Paula
[4] => Christ
[5] => Sam
[6] => Mark
)
Example 3: Get the remove elements
- The same as in example 2, however this time we assign the remove elements to $r.
<?php
$records = array(
'Alyssa',
'Emma',
'Landon',
'Alex',
'Christ',
'Sam',
'Mark');
$insert = array('Paul', 'Paula');
$r = array_splice($records, 2, 2, $insert);
print_r($r);
?>
Output
Array
(
[0] => Landon
[1] => Alex
)
Example 4
<?php
$records = array(
'Alyssa',
'Emma',
'Landon',
'Alex',
'Christ',
'Sam',
'Mark');
$insert = array('Paul', 'Paula');
$r = array_splice($records, -2, 0, $insert);
// $r returns nothing
print_r($records);
?>
Output
Array
(
[0] => Alyssa
[1] => Emma
[2] => Landon
[3] => Alex
[4] => Christ
[5] => Paul
[6] => Paula
[7] => Sam
[8] => Mark
)
Example 5:
<?php
$records = array(
'Alyssa',
'Emma',
'Landon',
'Alex',
'Christ',
'Sam',
'Mark');
$insert = array('Paul', 'Paula');
$r = array_splice($records, 0, -2, $insert);
print_r($records);
print_r($r);
?>
Output
Array
(
[0] => Paul
[1] => Paula
[2] => Sam
[3] => Mark
)
Array
(
[0] => Alyssa
[1] => Emma
[2] => Landon
[3] => Alex
[4] => Christ
)
Related Links
- array_change_key_case
- array_chunk
- array_combine
- array_count_values
- array_diff_assoc
- array_diff_key
- array_diff_uassoc
- array_diff_ukey
- array_diff
- array_fill_keys
- array_fill
- array_filter
- array_flip
- array_intersect_assoc
- array_intersect_key
- array_intersect_uassoc
- array_intersect_ukey
- array_intersect
- array_key_ exists
- array_keys
