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PHP: Method, Class, Uppercase.


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I have to write small segment of PHP code to print the word(s) 'Hello, World!' in uppercase letters, I have thus far wrote a small section of code that prints the output 'Hello, World!'. But, I'm completely stuck on how to make the letters all uppercase?!?? Moreover; that strtoupper goes somewhere in there right?



class TextFunctions {
    public static $string = 'Hello, World!';
    static public function strtoupper() {

echo TextFunctions::$string;


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That will only affect the display in the form, not convert. Lowercase characters are posted EG

    echo "Posted value : {$_POST['test']}";     //--> Hello World

<form method='post'>
<input type='text' name='test'   style='text-transform:uppercase' value='Hello World'>
<input type='submit' name='btnsub' value='Submit'>
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