Step by Step solution about How to resolve the algorithm Remove duplicate elements step by step in the PHP programming language

The provided PHP code performs the following operations:

1. Input Array ($list): An array named $list is defined, which contains both numeric and string values: [1, 2, 3, 'a', 'b', 'c', 2, 3, 4, 'b', 'c', 'd'].

2. array_unique() Function: The array_unique() function is used on the $list array. This function removes duplicate values from the array and returns a new array with only unique values.

3. Resulting Array ($unique_list): The function assigns the resulting array of unique values to the variable $unique_list. In this case, the $unique_list will contain the following values:

   • 1
   • 2
   • 3
   • 'a'
   • 'b'
   • 'c'
   • 4
   • 'd'

The goal of the code is to create a new array that contains only unique elements from the original array, eliminating any duplicates. In this example, the $unique_list contains only the distinct values from the $list array.

$list = array(1, 2, 3, 'a', 'b', 'c', 2, 3, 4, 'b', 'c', 'd');
$unique_list = array_unique($list);