Strtoupper

from PHPWiki - the free guide to PHP.

Returns a given string with all alphabetic characters converted to uppercase.

Contents 1 Arguments 1.1 Argument Inclusion 2 Return values 3 Examples 3.1 Example 1: The direct way 3.1.1 Output 3.2 Example 2: Using a variable 3.2.1 Output

[edit] Arguments

{{{return}}} {{{name}}} ({{{params}}})

[edit] Argument Inclusion

• strtoupper needs PHP version 4 or 5 to work.

[edit] Return values

strtoupper will return the given string with all alphabetic characters converted to uppercase. According to the php manual 'alphabetic' is determined by the current locale. So umlaut-a (ä) or other special characters from different languages might not get converted.

[edit] Examples

[edit] Example 1: The direct way

<?php
 echo strtoupper("I am Small");
?>

[edit] Output

I AM SMALL

[edit] Example 2: Using a variable

<?php
 $string = "special chars (#*+...) AND UPPERCASE STAY untouched!";
 echo strtoupper($string);
?>

[edit] Output

SPECIAL CHARS (#*+...) AND UPPERCASE STAY UNTOUCHED!

For more details on this function, visit its entry in the php manual.