我编写了一些PHP代码,如果返回结果将返回一个值,如果没有返回结果则返回0。但是,该功能非常麻烦且难以解析。我想知道是否有更简洁的方法来重写我的代码。提前谢谢!
$last_question_sql="SELECT DISTINCT QUESTION_ID
FROM branching_survey_responses
WHERE QUESTION_ID=(SELECT Max(QUESTION_ID)
branching_survey_responses
WHERE CUSTOMER_ID=232
AND SET_ID=2)
AND CUSTOMER_ID=232
AND SET_ID=3";
$last_question_result=mysql_query($last_question_sql);
if($last_question_status=mysql_fetch_assoc($last_question_result)){
$last_question=$last_question_status['QUESTION_ID'];
}
else{
$last_question= 0;
}
答案 0 :(得分:0)
编辑:
我不确定,但如果您使用此代码获取最后插入的项目,则可以使用mysql_insert_id()
示例:
成功执行INSERT
查询后,您可以检索最后一个ID,如
$last_question = mysql_insert_id();
function last_question($cid, $sid1, $sid2)
{
$question = 0;
$result = mysql_query(
"SELECT DISTINCT QUESTION_ID
FROM branching_survey_responses
WHERE QUESTION_ID=(SELECT Max(QUESTION_ID) branching_survey_responses
WHERE CUSTOMER_ID={$cid}
AND SET_ID={$sid1})
AND CUSTOMER_ID={$cid}
AND SET_ID={$sid2}");
if ($status = mysql_fetch_assoc($result)) {
$question = $status['QUESTION_ID'];
}
return $question;
}