How to remove identical values ​​from php array

In php, you can use the array_unique() function to remove the same values ​​​​in the array, the syntax format is "array_unique(array)". If there are two or more values ​​in the array that are the same, use the array_unique() function to keep only the first value and the other values ​​will be removed.

The operating environment of this tutorial: windows7 system, PHP8 version, DELL G3 computer

Remove the same values ​​from the php array

In PHP, you can use the array_unique() function to remove identical values ​​from an array. Example:

<?php
$arr1 =array("a"=>"Cat","b"=>"Dog","c"=>"Cat");
var_dump($arr1);
$arr2=array_unique($arr1);
var_dump($arr2);
?>

Output:

Related function introduction:

array_unique() function shift Removes duplicate values ​​in an array and returns the resulting array. When the values ​​of several array elements are equal, only the first element is retained and the other elements are deleted. The key names in the returned array remain unchanged.

Grammar:

array_unique(array)

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