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POphp is not updating my database
 

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  1. POphp is not updating my database
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    <p>I have this php page, which suppose to display an image and then update "download" row in database with 1 number for each visit, some times this works , and for some other pictures it's not working, how can i fix this ? please take a look at my code if there's something wrong :</p> <pre><code>&lt;?php include 'conf_global.php'; if ($_GET['id']) { $id = $_GET['id']; } else { die ("no id selected"); } @ $db = mysql_pconnect($mysql['host'], $mysql['user'], $mysql['pass']) or die(mysql_error()); //IT"S NOT WORKING! if (!$db) { die("error"); } mysql_select_db($mysql['db']) or die(mysql_error()); $query = "SELECT * FROM `images` WHERE id='" . $id ."'"; $result = mysql_query($query) or die(mysql_error()); if (!$result) { die("MySQL Select error"); } $num_results = mysql_num_rows($result); if ($num_results ==0) { die("Image not found"); } $row = mysql_fetch_array($result); if ($id != 0) { $downloads = $row['downloads'] + 1; $lastuse = time(); $ss = mysql_query("select downloads from `images` where id='".$id."'") or die(mysql_error()); $rr = mysql_fetch_array($ss); $query = "update `images` set downloads='".($rr['downloads']+1)."' where id='".$id."'"; $result = mysql_query($query); if (!$result) { die("MySQL update error"); } $query = "UPDATE `images` SET lastuse='" . $lastuse . "' WHERE id='". $id ."'"; $result = mysql_query($query); if (!$result) { die("MySQL update error2"); } //get current stats $query = "SELECT * FROM `stat_cache`"; $result = mysql_query($query); if (!$result) { die("MySQL Select error"); } $stat = mysql_fetch_array($result); //band update $bandwidth = $stat['band'] + $row['size']; $query = "UPDATE `stat_cache` SET band='" . $bandwidth . "' WHERE 1"; $result = mysql_query($query); if (!$result) { die("MySQL Update error"); } //downloads update $downloads = $stat['downloads'] + 1; $query = "UPDATE `stat_cache` SET downloads='" . $downloads . "' WHERE 1"; $result = mysql_query($query); if (!$result) { die("MySQL Update error"); } } //Lets create the image, now. if(!file_exists('./uploads/' . $id)) { die("Image not found"); exit; } header('Content-type: ' . $row['type']); $fp = fopen('./uploads/' . $id, 'r'); $contents = fread($fp, $maxfilesize); fclose($fp); echo $contents; ?&gt; </code></pre>
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    1. USAlamri
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    1. COWell when it doesn't work, what error message are you seeing?
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      1. POphp is not updating my database
      1. USmoopet
    2. COMayby is $rr['downloads'] an string, and then you need to convert it to an int... What does it says when you do this: echo $rr['downloads'] . '<br />'.($rr['downloads'] + 1);
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      1. POphp is not updating my database
      1. USMathlight
    3. CODo the whole thing as an transaction and set the isolation level so that you see uncommited changes to get the right number in the case of multiple uses. Also you can upadte last_use and downloads at the same time. I think your index is breaking when it is not working cos of multiuse
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      1. USJester
 

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