How to Reindex PHP Array - Quick Guide

Reindexing a PHP array is a common task that many developers encounter. It involves resetting the numeric index of an array so that the first element starts at index 0 and subsequent elements follow sequentially.

Method 1: Using array_values()

One simple method to reindex a PHP array is to use the built-in function array_values(). This function returns a new array with the values of the input array indexed numerically, starting from 0.

<?php
$fruits = array('apple', 'banana', 'orange');
$reindexed_fruits = array_values($fruits);
print_r($reindexed_fruits);
?>

The output will be:

Array
(
    [0] => apple
    [1] => banana
    [2] => orange
)

As you can see, the original array has been reindexed starting from 0.

Method 2: Using a loop

Another method to reindex a PHP array is to use a loop to iterate through the array and assign new numeric keys to each element.

<?php
$fruits = array('apple', 'banana', 'orange');
$reindexed_fruits = array();
$i = 0;
foreach ($fruits as $fruit) {
    $reindexed_fruits[$i] = $fruit;
    $i++;
}
print_r($reindexed_fruits);
?>

The output will be the same as the previous example:

Array
(
    [0] => apple
    [1] => banana
    [2] => orange
)

Both of these methods can be used to quickly and easily reindex a PHP array, depending on your coding preference and specific needs. Keep in mind that reindexing an array can affect the order of elements, so it should be used with caution.