Are there any alternative methods to remove duplicate entries from an array in PHP that offer better performance?

One alternative method to remove duplicate entries from an array in PHP that offers better performance is to use the array_flip() function in combination with array_keys(). This method works by flipping the keys and values of the array, effectively removing duplicates, and then using array_keys() to extract the unique values.

// Original array with duplicate entries
$array = [1, 2, 2, 3, 4, 4, 5];

// Remove duplicates using array_flip() and array_keys()
$uniqueArray = array_keys(array_flip($array));

// Output the unique array
print_r($uniqueArray);