How to remove duplicate elements from an array in php

php method to remove duplicate elements in an array: This can be achieved through the built-in function array_unique(). The array_unique() function removes duplicate values ​​from the array and returns the filtered array. If there are multiple identical elements in the array, only the first value is retained.

#php provides us with a dedicated built-in function array_unique() to solve this problem. This function removes duplicate values ​​from an array and returns the filtered array. If two or more array values ​​are the same, only the first value is retained and the other values ​​are removed.

(Related recommendations: php training)

Syntax:

array_unique(array)

Code example:

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

(Video tutorial Recommended: php video tutorial)

Running result:

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

The above is the detailed content of How to remove duplicate elements from an array in php. For more information, please follow other related articles on the PHP Chinese website!