$ STR = "Mary Had A Little Lamb and she loved it so ";
String strtolower (string$str
)-Convert the string to lowercase (all characters) // print Mary had a little lamb and she loved it so
Return Value: returns the converted string.
String strtoupper (string$string
)-Convert the string to uppercase (all characters) and print Mary had a little lamb and she loved it so
Return Value: returns the converted uppercase string.
String ucfirst (string$str
)-Convert the first letter of the string to uppercase Hello nihao? // Print Hello nihao?
Return Value: return result string
String lcfirst (string$str
)-Make the first character of a string lowercase
Return Value: returns the converted string Hello nihao? // Print Hello nihao?
String ucwords (string$str
)-Converts the first letter of each word in the string to uppercase.
Setstr
The first character of each word (if the first character is a letter) is converted to an upper-case letter, and this string is returned.
Here, the word is defined as a substring that follows the white space characters (space characters, tabs, line breaks, carriage returns, horizontal lines, and vertical lines.
String case conversion functions such as strtolower () strtoupper ()