? PHP Array_Values & Array_Unique

? Quick Overview

PHP provides useful functions to manipulate array values. The array_values() and array_unique() functions are commonly used to work with arrays that may have duplicate values or non-sequential keys. These functions help you clean up and retrieve unique values from arrays.

⚡ Key Concepts

• array_values() – Returns all the values from an array and reindexes the array numerically.
• array_unique() – Removes duplicate values from an array and returns a new array with only unique values.

? Syntax & Theory

array_values() is useful when you need a clean indexed array, while array_unique() focuses on removing repeated values. Both functions return new arrays and do not modify the original array.

? Example 1: Using array_values()

// Reindexing an associative array into a numeric array
<?php
$array = array("a" => "apple", "b" => "banana", "c" => "cherry");
$values = array_values($array);
print_r($values);
?>

? Example 2: Using array_unique()

// Removing duplicate values from an indexed array
<?php
$array = array("apple", "banana", "apple", "cherry", "banana");
$unique = array_unique($array);
print_r($unique);
?>

? Example 3: array_unique() with Associative Arrays

// Removing duplicate values while preserving associative keys
<?php
$array = array("a" => "apple", "b" => "banana", "c" => "apple", "d" => "cherry");
$unique = array_unique($array);
print_r($unique);
?>

? Interactive Insight

array_values()

array_unique()

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? Use Cases

• Cleaning user-submitted data.
• Removing repeated entries from datasets.
• Reindexing arrays before JSON encoding.