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    <p>First, I would set this line at the top of the script to enable all errors:</p> <pre><code>error_reporting(-1); </code></pre> <p>Then, I would print something on the screen to see if you script goes in the "true" part of the "if" or in the "false" (else).</p> <p>Finally, I would dump on the screen all the variable you put in your SELECT statement. Your variables are not escaped so it may be the reason why you have an error. Outputing the SQL statement and running it directly in MySQL will also tell you if the error comes from that part.</p> <p>Any quote (single or double) in your data may have an impact on your SQL.</p> <p>Edited code would be:</p> <pre><code> for ($z = 0; $z &lt; count($track); $z++) { if ( in_array($track[$z], $already_track)){ $at_key = array_search($track[$z], $already_track); $a = explode(":", $artist[$z]); $b = explode(":", $already_artist[$at_key]); $array_compared = array_diff($a, $b); if(empty($array_compared)){ continue; } else { $sql = "INSERT INTO tracklist(aid, sid, rid, added_by, added_on) VALUES('".$album."', '".$track[$z]."', '".$artist[$z]."', '".$_SESSION["userkey"]."', '" . $time . "' )"; echo 'First else.'; var_dump($track, $artist, $album, $_SESSION["userkey"]); $res = mysql_query($sql); var_dump($res); } } else { $sql = "INSERT INTO tracklist(aid, sid, rid, added_by, added_on) VALUES('".$album."', '".$track[$z]."', '".$artist[$z]."', '".$_SESSION["userkey"]."', '" . $time . "' )"; echo 'Second else.'; var_dump($track, $artist, $album, $_SESSION["userkey"]); $res = mysql_query($sql); var_dump($res); } } </code></pre> <p>Hope it helped!</p>
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    1. COSetting `error_reporting` to `-1` might not immediately "light a bulb". There's `E_ALL` for that. +1 anyways.
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    2. CO@Linus : Depending on your PHP version, E_ALL and -1 do not have the same behaviour. I could not assume the PHP version here.
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    3. COOut of curiosity, I'd love to see a working example of this. The ["tip" in the docs](http://php.net/manual/en/function.error-reporting.php) seems pretty contradictory; `E_ALL` in 4.x wouldn't cover `E_DEPRECATED` because it doesn't know about it (yet). What error messages are skipped then?
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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