strtoupper
PHP 4, PHP 5, PHP 7, PHP 8
strtoupper - Make a string uppercase
strtoupper(
string$string ): string
Returns string with all alphabetic characters converted to uppercase.
Note that 'alphabetic' is determined by the current locale. For instance, in the default "C" locale characters such as umlaut-a (รค) will not be converted.
Parameters
- string
-
The input string.
Return Values
Returns the uppercased string.
Notes
Note:
This function is binary-safe.