How can the PHP functions array_unique and array_splice be utilized to optimize data manipulation within arrays in PHP scripts?

When working with arrays in PHP scripts, it is common to encounter duplicate values that need to be removed or specific elements that need to be removed or replaced. The functions array_unique and array_splice can be used together to efficiently manipulate array data. array_unique removes duplicate values from an array, while array_splice can be used to remove or replace specific elements within an array. By combining these functions, you can optimize data manipulation within arrays in PHP scripts.

// Example of utilizing array_unique and array_splice to optimize data manipulation in PHP arrays

// Sample array with duplicate values
$originalArray = [1, 2, 3, 2, 4, 5, 3];

// Remove duplicate values
$uniqueArray = array_unique($originalArray);

// Remove specific elements (e.g., remove element at index 2)
array_splice($uniqueArray, 2, 1);

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