PHP ucwords() Function

The ucwords() function is a built-in function in PHP and is used to convert the first character of every word in a string to upper-case. Syntax:

string ucwords ( $string, $separator )

Parameter: This function accepts two parameters out of which first is compulsory and second is optional. Both of the parameters are explained below:

1. $string: This is the input string of which you want to convert the first character of every word to uppercase.
2. $separator: This is an optional parameter. This parameter specifies a character which will be used a separator for the words in the input string. For example, if the separator character is '|' and the input string is "Hello|world" then it means that the string contains two words "Hello" and "world".

Return value: This function returns a string with the first character of every word in uppercase. Examples:

Input : $str  = "Geeks for geeks"
        ucwords($str)
Output: Geeks For Geeks

Input : $str  = "going BACK he SAW THIS"
        ucwords($str)
Output: Going BACK He SAW THIS

Below programs illustrate the ucwords() function in PHP: Program 1: PHP

<?php

// original string
$str  = "Geeks for geeks";

// string after converting first character
// of every word to uppercase
$resStr = ucwords($str);

print_r($resStr);

?>

Output:

Geeks For Geeks

Program 2: PHP

<?php

// original string
$str = "Geeks#for#geeks #PHP #tutorials";

$separator = '#';

// string after converting first character
// of every word to uppercase
$resStr = ucwords($str, $separator);

print_r($resStr);

?>

Output:

Geeks#For#Geeks #PHP #Tutorials

Note: You should not use the character '$' as a separator because any name in PHP that starts with $ is considered as a variable name. So, your program may give an error that variable not found. Reference: https://www.php.net/manual/en/function.ucwords.php