Question

Here’s my function:

function process_image($path) {
    global $mysqli;
    list($width,$height) = getimagesize($path);
    $hash = md5_file($path,true);
    $pic = $mysqli->prepare('INSERT INTO pictures () VALUES ()');
    $pic->execute();
    $pic_id = $pic->insert_id;
    $size = $mysqli->prepare("INSERT INTO picture_sizes (filename, type, picture_id, hash, width, height) VALUES (?,'FULL',?,?,?,?)");
    $size->bind_param('sibii',$path,$pic_id,$hash,$width,$height);
    if(!$size->execute()) {
        echo $size->error.'<br/>';
    }
}

The ‘hash’ field always shows up as 0s in my database. I’ve got it set to BINARY(16). I’m guessing I’m using $size->bind_param incorrectly, but I can’t figure out how to do it properly. $hash is binary, so I should be using b with it, no?

Answer 1

In case of an error, md5_file returns false, which is converted to 0 when stored in the database. Check if the function returns false using the === operator.

Because the hash is a string, you can make the parameter of the type s (string).