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$str = "Hello World";
function foo($strArg)
{
echo $strArg;
}
foo($str); // Output: Hello World
?>
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$str = "Hello World";
function foo()
{
global $str;
echo $str;
}
foo(); // Output: Hello World
?>
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PHP: How to Get the Current Page URL

Sometimes, you might want to get the current page URL that is shown
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