How to delete duplicate elements in an array in php

How to delete duplicate elements in an array in php: You can use the built-in function array_unique() to achieve this. Function syntax: [array_unique(array)]. This function removes duplicate values ​​from an array and returns the filtered array.

array_unique() function is used to remove duplicate values ​​from the array and return the filtered array. If two or more array values ​​are the same, only the first value is retained and the other values ​​are removed.

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Function syntax:

array_unique(array)

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Code implementation:

<?php
$input = array("a" => "green", "red", "b" => "green", "blue", "red");
$result = array_unique($input);
print_r($result);
?>

Output result:

Array
(
 [a] => green
 [0] => red
 [1] => blue
)

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