-1
我有這樣的代碼,其輸出的QR碼:我重裝了QR代碼的網頁時,出現錯誤
<?php
include(JPATH_LIBRARIES . '/phpqrcode/qrlib.php');
$db = JFactory::getDbo();
$user = JFactory::getUser();
$query = $db->getQuery(true);
$query->select($db->quoteName(array('Soci', 'Nom', 'Cognoms', 'eCorreu')))
->from($db->quoteName('#__rsform_socis'))
->where($db->quoteName('username') . ' = '. $db->quote($user->username));
$db->setQuery($query);
$codeContents = $db->loadObjectList();
$data .= "Soci Nº: {$codeContents[0]->Soci}\n ";
$data .= "Nom: {$codeContents[0]->Nom} ";
$data .= "{$codeContents[0]->Cognoms}\n";
$data .= "e-correu: {$codeContents[0]->eCorreu}";
$tempDir = JPATH_SITE . '/images/';
$fileName = 'qr_'.md5($data).'.png';
$pngAbsoluteFilePath = $tempDir.$fileName;
$urlRelativeFilePath = JUri::root() .'images/' . $fileName;
if (!file_exists($pngAbsoluteFilePath)) {
QRcode::png($data, $pngAbsoluteFilePath);
}
echo '<img src="'.$urlRelativeFilePath.'" />';
echo '<br><a href="'.$urlRelativeFilePath.'" download="qrcode.png">Descarrega el carnet</a>';
?>
然而,當用戶重新加載頁面或返回到它,它給出了一個錯誤:
Notice: Undefined variable: data in /home/u916662558/public_html/plugins/system/sourcerer/helper.php(632) : runtime-created function on line 3
我想這與代碼已經在文件系統中的事實有關。我怎樣才能擺脫它(錯誤)? 謝謝,
達尼
'$ data'的第一次出現應該使用賦值而不是串聯:'$ data /*.*/=「SociNº:{$ codeContents [0] - > Soci} \ n」;' – mudasobwa 2014-10-06 14:38:21