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Look at the code below
echo "$_SERVER['HTTP_HOST']";
it show ‘Parse error’, while the next shows ok
$str = $_SERVER['HTTP_HOST'];
echo "$str";
That was very strange to me.
to refer an associative array inside of a string, you have to either add curly braces or remove quotes:
both
would work
http://php.net/manual/en/language.types.string.php <- extremely useful reading