Example
Convert all characters to uppercase:
<?php
echo strtoupper("Hello WORLD!");
?>
Run example »
Definition and Usage
The strtoupper() function converts a string to uppercase.
Note: This function is binary-safe.
Related functions:
- strtolower() - converts a string to lowercase
- lcfirst() - converts the first character of a string to lowercase
- ucfirst() - converts the first character of a string to uppercase
- href="func_string_ucwords.html">ucwords() - converts the first character of each word in a string to uppercase
Syntax
strtoupper(string)
Parameter | Description |
---|---|
string | Required. Specifies the string to convert |
Technical Details
Return Value: | Returns the the uppercased string |
---|---|
PHP Version: | 4+ |
< PHP String Reference