Removing Duplicate Values in PHP

Removing Duplicate Values in PHP

Dear friend,
Array_unique removes duplicate values from an array.
It takes an input as array and return non duplicate array.
Syntax of array_unique() is as below.

array array_unique ( array $array [, int $sort_flags = SORT_STRING ] )

Here $sort_flags indicate sorting type flag which may be regular, numeric, string & local string.

Examples

<?php

$array =array(1,1,2,3);

$array =array_unique($array);

// Array is now (1, 2, 3) because 1 occurs 2 times.

?>

array_unique() not only removes duplicate numbers, but also it can remove duplicate strings as shown as below.

<?php

$array =array("Ram","Krishna","Ram","Ganesh");

$array =array_unique($array);

//removes “Ram” as it occurs 2 times.

?>