php - Highlight multiple keywords from a given string

Question

I need to highlight each word separately from a string, even if the string is only one word.

$keyword = 'should be bolded';

$string = 'This shouldbebolded';

Expected result:

"This shouldbebolded." This is the Google like highlight.

Answer 1

A simple function will suffice your requirement. You can break your words into an array to search for all of them separately.

Simply use explode() function to break your words into array and pass it to the function below.

function highlightWords($string, $words)
 {
    foreach ( $words as $word )
    {
        $string = str_ireplace($word, '<span class="highlight">'.$word.'</span>', $string);
    }
    return $string;
 }