(PHP 4, PHP 5)
ucwords — Uppercase the first character of each word in a string
$str
   [, 
    string $delimiters = " \t\r\n\f\v"
   
  ] )
   Returns a string with the first character of each word in
   str capitalized, if that character is alphabetic.
  
   The definition of a word is any string of characters that is immediately
   after any character listed in the delimiters parameter
   (By default these are: space, form-feed, newline, carriage return, horizontal tab, and vertical tab).
  
strThe input string.
delimiters
       The optional delimiters contains the word separator characters.
      
Returns the modified string.
| Version | Description | 
|---|---|
| 5.4.32, 5.5.16 | Added the delimitersparameter. | 
Example #1 ucwords() example
<?php
$foo = 'hello world!';
$foo = ucwords($foo);             // Hello World!
$bar = 'HELLO WORLD!';
$bar = ucwords($bar);             // HELLO WORLD!
$bar = ucwords(strtolower($bar)); // Hello World!
?>
Example #2 ucwords() example with custom delimiter
<?php
$foo = 'hello|world!';
$bar = ucwords($foo);             // Hello|world!
$baz = ucwords($foo, "|");        // Hello|World!
?>
Note: This function is binary-safe.