How to change the color of the first character of a word using PHP script? Last Updated : 27 Jan, 2021 Improve Improve Like Article Like Save Share Report The preg_replace() function is an in-built function that returns a word or array of words with the replacement of some content after searching the pattern. If the search pattern is not found then it will be returned unchanged. Approach: Declare a variable with a string value. Use preg_replace() function to replace the first character of every word. Display the replaced value of the string variable. Example 1: PHP <?php // Text to replace $text = "Geeks For Geeks"; // The preg_replace is used here to replace the // color of first character of the word $text = preg_replace('/(\b[a-z])/i', '<span style="color:green;">\1</span>', $text); // Display the text value echo $text ?> Output: Example 2: PHP <?php // Text to replace $text = "Practice code in GEEKSFORGEEKS"; // The preg_replace is used here to replace the // color of first character of the word $text = preg_replace('/(\b[a-z])/i', '<span style="color:green;">\1</span>', $text); // Display the text value echo $text ?> Output: Like Article Suggest improvement Next How to convert first character of all the words uppercase using PHP ? Share your thoughts in the comments Add Your Comment Please Login to comment...