We have string str and we need to find the string with all unique characters from the given string. All different characters should be printed in ascending order.
Input : $str = "GeeksforGeeks" Output : Gefkors Explanation, the unique characters in the given string $str in ascending order are G, e, f, k, o, r and s Input : $str = "Computer Science Portal" Output : CPSaceilmnoprtu Explanation, the unique characters in the given string $str are C, P, S, a, c, ei, l, m, n, o, p, r, t and u
The problem can be solved using PHP in built function for collecting all the unique characters used in the given string.The in built function used for the given problem is:
- count_chars():The in built function has parameter which contains return mode an integer type which are as such 0, 1, 2, 3, 4 in which return mode 3 returns the string of all different characters used in the given string in ascending order.
Note: The string is case-sensitive.
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