The ucwords() function in PHP is used to convert the first character of each word in a string to uppercase, while the rest of the characters in the word remain lowercase. This function is useful when you want to format a string to have each word start with a capital letter, often seen in titles or headings.

Syntax:

string ucwords(string $string)

Parameters:

• $string: The input string to be converted.

Return Value:

• Returns a new string with the first character of each word converted to uppercase.

Example 1: Basic Example

<?php
$string = "hello world";
echo ucwords($string); // Output: Hello World
?>

Example 2: String with Multiple Words

<?php
$string = "this is a sample sentence";
echo ucwords($string); // Output: This Is A Sample Sentence
?>

Example 3: String with Punctuation

If the string contains punctuation, ucwords() will still capitalize the first letter of each word, excluding punctuation marks as word boundaries.

<?php
$string = "hello, my name is john.";
echo ucwords($string); // Output: Hello, My Name Is John.
?>

Example 4: Custom Delimiters (Optional)

By default, ucwords() uses spaces to determine where words begin. However, you can provide additional delimiters to treat as word boundaries using the second parameter.

<?php
$string = "hello-world-php";
echo ucwords($string, "-"); // Output: Hello-World-Php
?>

This function is great for formatting strings like titles or headings where each word should start with a capital letter.