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

Last update on August 19 2022 21:50:37 (UTC/GMT +8 hours)

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:

PHP Code Editor:

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PHP: Tips of the Day

Returns all elements in an array except for the first one

Example:

<?php
function tips_tail($items)
{
  return count($items) > 1 ? array_slice($items, 1) : $items;
}

print_r(tips_tail([1, 5, 7]));
?>

Output:

Array
(
    [0] => 5
    [1] => 7
)