Place All Resulting Rows from MySQL Query in Arrays

I have the following MySQL query:

$imgDimensions_query = "SELECT imgWidth, imgHeight FROM (
    SELECT imgHeight, imgWidth FROM primary_images WHERE imgId < 10
    UNION 
    SELECT imgHeight, imgWidth FROM secondary_images WHERE primaryId < 10) as imgDimensions";
$imgDimensions_data = mysql_query($imgDimensions_query) or die('MySql Error' . mysql_error());

I would like to place all the results in two separate arrays; One for imgWidth, and 开发者_运维知识库one for imgHeight.

I tried to do this using a while loop, but I didn't know what to use inside the loop to create the arrays.

I'm going to explain what I will be doing with this information in case you think of a better method than using arrays: I will be first removing any results from imgWidth and imgHeight if they match an external set of values. Then I will find the maximum values of both imgWidth and imgHeight after said removal, and placing those two values in respective variables.

Thanks for your help.

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You can use mysql_fetch_asoc() like this:

while($row = mysql_fetch_assoc($imgDimensions_data)) {
    $imgWidth[] = $row['imgWidth'];
    $imgHeight[] = $row['imgHeight'];
}