[php] Problem mit auto_increment

[ingo.preuss at gmx.net]

Hallo,
ich bin hier schier am verzweifleln. Ich habe eine Tabelle in einer 
Mysql-db wie folgt angelegt:

CREATE TABLE binary_data (
    id INT(4) NOT NULL AUTO_INCREMENT,
    description CHAR(50),
    bin_data LONGBLOB,
    filename CHAR(50),
    filesize CHAR(50),
    filetype CHAR(50),
    primary key(id));

Mit folgendem skript will ich Bilder uploaden:

*<?php*
//code that will be executed if the form has been submitted:
if($submit) {
    //connect the database
    mysql_connect("localhost","**user**","**pwd**");
    mysql_select_db("binary_data");
   
    $data = addslashes(fread(fopen($form_data, "r"), filesize($form_data)));
   
    $result=mysql_query("INSERT INTO 
binary_data(description,bin_data,filename,filesize,filetype) 
"."VALUES('$form_description','$data','$form_data_name','$form_data_size','$form_data_type')");
   
    $id= mysql_insert_id();
    print "<p>This file has the following database ID: <b>$id</b>";
   
    mysql_close();
} else {
    //show the form to submit new data:   
*?>*
    <form method="post" action="<?php echo $PHP_SELF; ?>" 
enctype="multipart/form-data">
    file description:<br />
    <input type="text" name="form_description" size="40">
    <input type="hidden" name="MAX_FILE_SIZE" value="1000000">
    <br />File to upload/store in db:<br />
    <input type="file" name="form_data" size="40">
    <input type="submit" name="submit" value="submit">
    </form>
   
*<?php*    
}
*?>*

Ich verstehe nicht, warum ich den upload als gelungen angezeigt bekomme, 
letztlich aber nichts in der table landet.

Gruß, Ingo