PHP Update Array Items

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Table of Contents

• PHP Update Array Items
  • PHP 1 Update Array Item
    • Example 1
  • PHP 2 Update Array use key name
    • Example 2
  • PHP 3 Update Array Items in a Foreach Loop
    • Example 3
  • Document
  • Reference

PHP 1 Update Array Item

To update an existing array item, you can refer to the index number for indexed arrays, and the key name for associative arrays.

<h4>Update_Array_Item</h4>
<?php
$cars = array("Volvo", "BMW", "Toyota");
$cars[1] = "Ford";
var_dump($cars);
?>

Example 1

Result View Example

PHP 2 Update Array use key name

<h4>Update_Array_use_key_name</h4>
<p>To update items from an associative array, use the key name:</p>
<pre>

<?php
$cars = array("brand" => "Ford", "model" => "Mustang", "year" => 1964);
$cars["year"] = 2024;
var_dump($cars);
?>  

</pre>

Example 2

Result View Example

PHP 3 Update Array Items in a Foreach Loop

<h4>Update_Array_Items_in_a_Foreach_Loop</h4>
<p>Change ALL item values to "Ford":</p>
<?php
    $cars = array("Volvo", "BMW", "Toyota");
    foreach ($cars as &$x) {
    $x = "Ford";
    }
    unset($x);
    var_dump($cars);
?>

Example 3

Result View Example

Document

Document in project

You can Download PDF file.

Reference