How to delete duplicate data in an array in php

php method to delete duplicate data in an array: You can use the array_unique() function to delete. 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.

#You can use the built-in function array_unique() function to remove duplicate elements. The array_unique() 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.

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Syntax:

array_unique(array)

Parameters:

• array Required. Specifies an array.

• sortingtype Optional. Specifies the sorting type.

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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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