How Can I Insert Elements into Specific Array Positions using PHP?

Inserting Elements at Specific Positions in Arrays

Imagine having two arrays, one with numerical indexes and the other with named keys. To insert an element after the third element in both arrays, we can leverage the power of array_slice().

Solution:

The key is to split the arrays before and after the desired insertion point using array_slice(). Then, simply recombine the parts using the union array operator , along with the element to insert.

$res = array_slice($array, 0, 3, true) +
    array("my_key" => "my_value") +
    array_slice($array, 3, count($array) - 1, true);

Example:

$array = array(
    'zero' => '0',
    'one' => '1',
    'two' => '2',
    'three' => '3',
);

$res = array_slice($array, 0, 3, true) +
    array("my_key" => "my_value") +
    array_slice($array, 3, count($array) - 1, true);

print_r($res);

Output:

Array
(
    [zero] => 0
    [one] => 1
    [two] => 2
    [my_key] => my_value
    [three] => 3
)

This solution allows you to insert elements at any desired position in your arrays, providing a flexible and efficient way to modify their contents.

The above is the detailed content of How Can I Insert Elements into Specific Array Positions using PHP?. For more information, please follow other related articles on the PHP Chinese website!