Warning: Cannot modify header information - Page 3

6 New Member

Hi, I cant change the header to display images from a database. It's giving me this error :

Warning: Cannot modify header information - headers already sent by (output started at /home/content/d/f/m/dfmcons/html/secwhouse/index.php:18) in /home/content/d/f/m/dfmcons/html/secwhouse/index.php on line 71

Here is the code :
[php]
<?
mysql_connect(" $host","$userna me", "$password" );
mysql_select_db ("secwhouse" );
?>
<head>
<title>Securi ty Warehouse Sample Concept</title>
</head>
<body>
<table width="750" border="0" cellspacing="0" cellpadding="0" align="center">
<tr>
<th scope="col"><ta ble width="750" border="0" cellspacing="0" cellpadding="0" >
<tr>
<th scope="col"><ob ject classid="clsid: D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macrom edia.com/pub/
shockwave/cabs/flash/swflash.cab#ver sion=7,0,19,0" width="750" height="125">
<param name="movie" value="secbanne r2.swf" />
<param name="quality" value="high" />
<embed src="secbanner2 .swf" quality="high" pluginspage="ht tp://www.macromedia. com/go/getflashplayer" type="applicati on/x-shockwave-flash" width="750" height="125"></embed>
</object></th>
</tr>
</table>
<table width="750" border="0" cellspacing="0" cellpadding="0" >
<tr>
<th scope="col"><fo rm id="mnusrch" name="mnusrch" method="post" action="">
<table width="750" border="0" cellspacing="0" cellpadding="0" >
<tr>
<th scope="col"><in put type="text" name="textfield " /></th>
<th scope="col"><im g src="images/sec_01.gif" width="72" height="30" /></th>
<th scope="col"><im g src="images/sec_03.gif" width="359" height="30" /></th>
<th scope="col"><im g src="images/sec_04.gif" width="74" height="30" /></th>
<th scope="col"><im g src="images/sec_05.gif" width="98" height="30" /></th>
</tr>
</table>
</form>
</th>
</tr>
</table>
<table width="750" border="0" cellspacing="0" cellpadding="0" >
<tr>
<th scope="col"><im g src="images/menu_01.gif" width="91" height="14" /></th>
<th scope="col"><im g src="images/menu_02.gif" width="92" height="14" /></th>
<th scope="col"><im g src="images/menu_03.gif" width="104" height="14" /></th>
<th scope="col"><im g src="images/menu_04.gif" width="110" height="14" /></th>
<th scope="col"><im g src="images/menu_05.gif" width="91" height="14" /></th>
<th scope="col"><im g src="images/menu_06.gif" width="105" height="14" /></th>
<th scope="col"><im g src="images/menu_07.gif" width="157" height="14" /></th>
</tr>
</table>
<table border="0" cellspacing="0" cellpadding="0" >
<tr>
<th scope="col">&nb sp;</th>
</tr>
</table>
<?
$sql = "SELECT * FROM `prod` WHERE `prod`.`special ` = 'n'";
$counter=0;
$result =mysql_query($s ql);
while($rows=mys ql_fetch_array( $result))
{
$count=0;
while($count<>5 )
{
?>
<table border="0" cellspacing="0" cellpadding="0" id="main">
<tr>
<th scope="col"><ta ble border="0" cellpadding="0" cellspacing="0" id="left1">
<tr>
<th scope="col"><? header("Content-type: image/jpeg");echo $rows['image']; ?></th>
</tr>
<tr>
<th scope="row">&nb sp;</th>
</tr>
<tr>
<th scope="row"><? echo $rows['prod']; ?></th>
</tr>
<tr>
<th scope="row">&nb sp;</th>
</tr>
<tr>
<th scope="row"><? echo $rows['price']; ?></th>
</tr>
</table></th>
<th scope="col">&nb sp;</th>
<th scope="col"><ta ble border="0" cellspacing="0" cellpadding="0" >
<tr>
<?
$rows=mysql_fet ch_array($resul t);
?>
<th scope="col"><? echo $rows['image']; ?></th>
</tr>
<tr>
<th scope="row">&nb sp;</th>
</tr>
<tr>
<th scope="row"><? echo $rows['prod']; ?></th>
</tr>
<tr>
<th scope="row">&nb sp;</th>
</tr>
<tr>
<th scope="row"><? echo $rows['price']; ?></th>
</tr>
</table></th>
<th scope="col">&nb sp;</th>
<th scope="col"><ta ble border="0" cellpadding="0" cellspacing="0" id="right1">
<tr>
<th scope="col">&nb sp;</th>
</tr>
<tr>
<th scope="row">&nb sp;</th>
</tr>
<tr>
<th scope="row">&nb sp;</th>
</tr>
<tr>
<th scope="row">&nb sp;</th>
</tr>
<tr>
<th scope="row">&nb sp;</th>
</tr>
</table></th><? $count=5 ?>
</tr>
</table><? } }?>
<br />
<p> </p>
<p><br />
</p>
<p> </p>
<p> </p>
<p> </p></th>
</tr>
</table>
</body>
</html>
[/php]I left out the connection details, cos the password is visible

That is not the only thing you left out. You must enclose all code within the appropriate code tags. Read the Posting Guidelines. - moderator

Feb 29 '08

Subscribe Reply

2050

nathj

938

Recognized Expert Contributor

Why not just have the path to the image stored in the database and then use that information in a normal <img> tag?

This would be much simpler and not require headers.

Cheers
nathj

Mar 3 '08 #21

hsriat

1,654

Recognized Expert Top Contributor

For that you would need to make another PHP file. Say get_image.php with the following code:[php]<php
if (!isset($_GET['id'])) die('Invalid Parameter');
/*
DO - CONNECT TO DATABASE
FETCH ARRAY FROM THE DB, WHERE unique_id_of_th e_table = $_GET['id']
*/
header("Content-type: image/jpeg");
echo $rows['image'];
?>[/php]
And edit line no. 71 of your above file like this:
[html]<th scope="col"><im g src="get_image. php?id=<? echo $rows['unique_id_of_t he_table']; ?>"></img></th>[/html]

* unique_id_of_th e_table : whatever unique id you are using.

Mar 3 '08 #22

nathj

938

Recognized Expert Contributor

Maybe I'm missing something, and I'm perfectly happy to admit that, but is the point of putting the image itself into the database? Surely it is easier to just put the image as a file on the server somewhere and then put the file path in the database. This can then be used in a nomal <img> tag without any need for faffing around with headers.

It just seems to make more sense to me that way. Obviously you can't set the src of the img to be the actual image which is why it didn't work earlier.

If it were me I would have fields in the table called image_src, image_title and image_alt. Then assuming the SQL had been run and the following code is inside a foreach loop:
[php]
echo "<img src='" . $laRow['image_src'] . "' title='" . $laRow['image_title'] . "' alt='" . $laRow['image_alt'] ."' />' ;
[/php]

I am aware that this is a small code snippet, I would have this in a foreach loop after the SQL returned an associative array. I use this type of structure a lot and it works everytime.

Cheers
nathj

Mar 3 '08 #23

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