PHP for loop mysql array values insert - inserting 100 000 rows instead of array length

The question should be clear, but I'll explain once more: I'm trying to insert the individual values from an array in a mysql database.

Here is the code:

public function addRoute($pointArray){

    $length = 4; //just to be sure that nothing went wrong with calulating the length

    for($i = 0; $i < $length; $i++){

        $result = "INSERT into route_point(latlng, routeID) VALUES (4849, 10)"; //sample values, to once again be sure that there is nothing wrong with the values
        mysql_query($result);
    }

    mysql_close(); //just to be sure again
    return true;
}

The pointArray is being passed from actionscript using the zendamf framework if anyone is wondering. In my eyes nothing is wrong with the statement, but instead of inserting 4 rows, it inserts more than 100 000 rows.. I also don't receive the "true" back in actionscript, which should be passed when the php function is executed.

I also tried a for each loop, but I get an error (which I can't read since i'm calling the php file from actionscript).

foreach ($pointArray as $value) {

        $result = "INSERT into route_point(latlng, routeID) VALUES ('$value', 10)";
        mysql_query($result);

    }

I prefer to use a for loop though.

Absolutely clueless on this, fiddled with several settings for a couple of hours now.