Capitalize first letters of a string with php

You can use the ucwords() function which is a built-in PHP function that converts the first character of each word in a string to uppercase and the rest to lowercase. It’s similar to ucfirst(), which only capitalizes the first character of the first word in a string.

function capitalizeWords($string) {
    return ucwords($string);
}

Then use the function like this:

$string = "hello world";
$capitalizedString = capitalizeWords($string);
echo $capitalizedString; // Outputs: "Hello World"