issue with implode

[HDFilmMaker2112]

The below generates an error of: Warning: implode() [function.implode]: Invalid arguments passed in /home/zyquo/public_html/ghosthuntersportal.com/admincp.php on line 74

 

$product_id=$_GET['id'];
$sql300="SELECT * FROM keywords WHERE keywords.product_id=".$product_id."";
$result300=mysql_query($sql300);
while($row300=mysql_fetch_array($result300)){
$keyword.=$row300['keyword'];
}
$keyword=implode(",",$keyword);

<p><label>Product Keywords:</label> <input type="text" name="keyword" value="'.$keyword.'" size="30" /></p>

 

When I remove the implode, the input value is populated with the information, it just doesn't have commas in between each keyword.

 

EDIT: Wrong forum... please move to PHP Coding Help.

[Zane]

change

$keyword.=$row300['keyword'];

to this

$keyword[] = $row300['keyword'];

implode requires an array, not a concatenated string... much less a string at all.

[HDFilmMaker2112]

Thanks.