Question: (d) Write a PHP script to find the first non-repeated character in a given string. Example #1 Sample Input: apple Sample Output: a Example

(d) Write a PHP script to find the first non-repeated character in

(d) Write a PHP script to find the first non-repeated character in a given string. Example #1 Sample Input: apple Sample Output: a Example #2 Sample Input: abcab Sample Output: c Example #3 Sample Input: abab Sample Output: None Hint: use PHP functions substr_count and substr.

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