我有一个数据库表(furcodes)与字段A,B,C,d,E 我使用此代码来创建一个Joomla网站兑换代码系统:PHP查询从1和表2个字段
<?php
$redeem_code = JRequest::getString('redeem_code', '', 'post');
$db =& JFactory::getDBO();
$query = "
SELECT COUNT(`B`)
FROM `furcodes`
WHERE `B` = '$redeem_code' ;
";
$db->setQuery($query);
$count = $db->loadResult();
if ($count) {
$mainframe =& JFactory::getApplication();
$mainframe->enqueuemessage('You have succesfully redeemed this fur code');
return false;
} else {
$mainframe =& JFactory::getApplication();
$mainframe->enqueueMessage(JText::_('Invalid code. Please check and try again.'), 'error');
return false;
}
?>
我使用计数来检查这个代码是否存在于数据库中,但是我还需要从列“E”中得到表示这个代码是否曾经使用过的字段(值0 =未使用或使用1 = ,每个代码一个使用),并创建一个如果是这样的:
if $used == 1
echo "This code has been used"
任何帮助吗?
我使用的最终代码,它可能会帮助别人。
<?php
$your_fur_code = JRequest::getString('fur_code', '', 'post');
$db =& JFactory::getDBO();
$query = "SELECT `E` FROM `furcodes` WHERE `B` = '$your_fur_code'";
$db->setQuery($query);
$code_used = $db->loadResult();
if ($code_used == "1") {
$mainframe =& JFactory::getApplication();
$mainframe->enqueueMessage(JText::_('The code has already been used.'), 'error');
return false;
} if ($code_used == "0") {
$mainframe =& JFactory::getApplication();
$mainframe->enqueuemessage('You have succesfully redeemed this code');
return false;
} else {
$mainframe =& JFactory::getApplication();
$mainframe->enqueueMessage(JText::_('Invalid code. Please check and try again.'), 'error');
return false;
}
?>
没想到那...感谢队友 – John