How to quickly remove duplicate values ​​from php array

How to quickly remove duplicate values ​​​​in PHP arrays: You can use PHP's built-in function array_unique to achieve this, such as [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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Syntax:

array_unique(array)

Parameters:

array Required. Specifies an array.

sortingtype Optional. Specifies the sorting type.

Code example:

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

Output result:

Array ( [a] => red [b] => green )

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