Wrapping quotes around a php id in XML

I've got this line of code:

$xml_output .= "\t<Event=" . $x . ">\开发者_如何转开发n";

And it will output:

<Event=0>

<Event=1>

<Event=2>

etc etc through my loop.

I need it to output as this (with the quotes around the number):

<Event="0">

<Event="1">

<Event="2">

Any help, and I'm sure it's simple would be greatly appreciated!

$xml_output .= "\t<Event=\"" . $x . "\">\n";

PHP Strings

To specify a literal single quote, escape it with a backslash (\). To specify a literal backslash before a single quote, or at the end of the string , double it (\\). Note that attempting to escape any other character will print the backslash too.

$xml_output .= "\t<Event=\"" . $x . "\">\n";

However, that is not valid xml.

$xml_output .= "\t<Event=\"" . $x . "\">\n";

The slash escapes the quote for output. More information about double quoted strings can be found in the PHP manual