w3resource

PHP Exercises: Find the first non-repeated character in a given string

PHP: Exercise-42 with Solution

Write a PHP program to find the first non-repeated character in a given string.

Sample Example:

Input: Green
Output: G
Input: abcdea
Output: b

Sample Solution: -

PHP Code:

<?php
 function find_non_repeat($word) {
  $chr = null;
  for ($i = 0; $i <= strlen($word); $i++) {
     if (substr_count($word, substr($word, $i, 1)) == 1) {
        return substr($word, $i, 1);
     }
  }
}

echo find_non_repeat("Green")."\n";
echo find_non_repeat("abcdea")."\n";
?>

Sample Output:

G                                                           
b      

Flowchart:

Flowchart: Find the first non-repeated character in a given string.

PHP Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

Previous: Write a PHP program to print out the multiplication table upto 6*6.
Next: Write a PHP program that multiplies corresponding elements of two given lists.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



Follow us on Facebook and Twitter for latest update.