cadena php a Uppwe
$lowercase = "this is lower case";
$uppercase = strtoupper($lowercase);
echo $uppercase;
// THIS IS LOWER CASE
Whale
$lowercase = "this is lower case";
$uppercase = strtoupper($lowercase);
echo $uppercase;
// THIS IS LOWER CASE
$str = strtolower($str);
string strtoupper ( $string )