mysql_fetch_assoc()这个转换为什么老报错

Question

<?php 

        $huowu=mysql_query("select shangping.title,dianpu.title,shuliang,dianid,lei,page,danjia from huowu join dianpu on huowu.dianid=dianpu.dianid join shangping on huowu.shangid=shangping.shangid ");

   

while($a=mysql_fetch_assoc($huowu)){

        var_dump($a);

Answer 1

哦，对，改成mysql_fetch_array()了，不过这类的转换都报错，为什么