(PHP 4, PHP 5, PHP 7, PHP 8)

ucwordsUppercase the first character of each word in a string


ucwords(string $string, string $separators = " \t\r\n\f\v"): string

Returns a string with the first character of each word in string capitalized, if that character is alphabetic.

For this function, a word is a string of characters that are not listed in the separators parameter. By default, these are: space, horizontal tab, carriage return, newline, form-feed and vertical tab.



The input string.


The optional separators contains the word separator characters.

Return Values

Returns the modified string.


Example #1 ucwords() example

'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

$bar ucwords($foo);             // Hello|world!

$baz ucwords($foo"|");        // Hello|World!

Example #3 ucwords() example with additional delimiters

"mike o'hara";
$bar ucwords($foo);                 // Mike O'hara

$baz ucwords($foo" \t\r\n\f\v'"); // Mike O'Hara


Note: This function is locale-aware and will handle input according to the currently set locale. However, it only works on single-byte character sets. If you need to use multibyte characters (most non-western-European languages) look at the multibyte or intl extensions instead.

Note: This function is binary-safe.

See Also