How can the array_unique function in PHP be used to filter out duplicate entries in an array?

The array_unique function in PHP can be used to filter out duplicate entries in an array by returning an array with only unique values, removing any duplicates. This can be useful when you have an array with repeated values and you want to simplify it by removing the duplicates. 

// Example of using array_unique to filter out duplicate entries in an array
$array = [1, 2, 2, 3, 4, 4, 5];
$uniqueArray = array_unique($array);

print_r($uniqueArray); // Output: Array ( [0] => 1 [1] => 2 [3] => 3 [5] => 4 [6] => 5 )

Keywords

PHP array_unique duplicate entries filter array

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