You should go to php.ini and delete a line like this
extension=php_xdebug-...
How did this line was created.
You put a xdebug's file into PHP extensions path like this
.../php5.X.XX/ext/
Now you may turn on this PHP extension by any _AMP UI tools like WAMP, XAMPP etc.
To prevent this painful misfortune you must put the Xdebug file into
.../php5.X.XX/zend_ext/
It'll make Xdebug hidden from any _AMP tool.
And correct your zend_extension parameter too.
zend_extension = .../php5.X.XX/ext/php_xdebug-...
to
zend_extension = .../php5.X.XX/zend_ext/php_xdebug-...
It's common default path for it.
Please, remember!
With PHPStorm, Eclipse, Zend etc., possibly you should consider to correct two php.ini files.
The first one for your web server. Commonly under Apache folder
...Apache2.X.XXin
The second one is for the direct PHP-script debugging. It lies in the PHP hosting folder:
...phpphp5.X.XX
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