將字串的單詞字首的字母轉為 大寫 並返回該字串。
可以指定的符號delimiters來定義單詞。(預設為空格，換行，Tab)
ucwords ( string $str [, string $delimiters = "\t\r\n\f\v" ] ) : string
Example:
$test1 = "apple and banana|orange";
print_r(ucwords($test1));
$test2 = "apple and banana|orange";
print_r(ucwords($test2, '|'));
$test3 = 123;
print_r(ucwords($test3));
Output:
// ucwords($test1):
Apple And Banana|orange
// ucwords($test2):
Apple and banana|Orange
// ucwords($test3):
123