PHP string-Case operations

PHP provides us with a function for converting uppercase and lowercase letters into strings,

Strtoupper () converts all the specified characters to uppercase;

strtolower () converts characters from north to lowercase;

ucwords () turns the first letter of each word in the specified string into uppercase;

The ucfirst () function converts the first letter of the specified string to uppercase.

The syntax structure is the same, fill in the parentheses with the specified string.

<?PHP$a= ' I am A student. ';Echo Strtoupper($a)." <br> ";//I AM A STUDENT.Echo Strtolower($a)." <br> ";//I am a student.Echo Ucfirst($a)." <br> ";//I am A student.Echo Ucwords($a)." <br> ";//I Am A Student.?>

From Hui Zhi Network

PHP string-Case operations