Eclipse for PHP建议我变量,即使我只是按空格

I'm using Eclipse Luna for PHP and there's something annoying. As I push space, as I type a semicolon or a comma or a closing brace and other characters, it suggests me a list of variables ($_COOKIE, $_ENV, $_FILES...)

In example this means that if I want to create a new function named test() and I type

function[space]test()[space]{[return]

the result is

function test()$_COOKIE {

}

to correctly create the function I have to type

function[space]test()[esc][space]{[return]

Is there a way to manage how Eclipse shows the autosuggestion?