How to delete duplicate values ​​in an array in php

How to delete duplicate values ​​in an array in php: You can use the built-in function array_unique() to achieve this. The array_unique() function is used to remove duplicate values ​​from the array and return the filtered array. If there are multiple array values ​​with the same value, only the first value is retained.

php has a built-in function array_unique() that can be used to remove duplicate values ​​in an array.

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array_unique() function is used to remove duplicate values ​​in 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.

Grammar:

array_unique(array)

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Example:

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

Output:

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

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