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Php / MySQL update script sending empty response

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A couple months back, I made a quick script in PHP that takes values from a webpage, and inserts them into an SQL database. The script worked for a while, until recently when my web host upgraded to a new server. Now the script always gives me "(52) Empty reply from server" (using curl).

My knowledge on fixing these sorts of things is fairly limited, so I came here looking for any help or suggestions someone might be willing to offer. Thanks!

My script:

error_reporting(E_ALL | E_STRICT);
$max_execution_time = ini_get( 'max_execution_time' );
mysql_connect("localhost","myusername","mypassword") or die(mysql_error());
mysql_select_db("hlallian_rank") or die(mysql_error());
//After Connection
$result1 = mysql_query("SELECT name, rank FROM group") or die(mysql_error());
while ($row1 = mysql_fetch_array($result1, MYSQL_ASSOC))
$char = $row1['name'];
// echo "<br/>updating $char";
$searchStatus = getCharData($char, $charData);
$exppercent = sprintf('<br>%.2F', $charData['expPercent']).'%';
mysql_query("UPDATE group SET class='{$charData['jobImageURL']}', avatar='{$charData['characterImageURL']}', pet='{$charData['petImageURL']}', level='{$charData['level']}', exp='{$charData['experience']}', percent='{$exppercent}', rank='{$charData['rank']}' WHERE name='{$char}'")or die(mysql_error());
set_time_limit( $max_execution_time );

Updatesig.php contains the code that fetches the data from the website, using regular expressions and preg_match.

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