我已经阅读了很多关于这个确切问题的其他线程,但由于某种原因,我无法解决我的问题。真的需要一些帮助。
查询很好,我在phpmyadmin中测试了它,结果是:
MySQL返回一个空结果集(即零行)。 (查询了 0.0004秒。)
来源
$items=array();
$kwer="select distinct(d.id) as item, d.name, sd.date
from sklad h
inner join sent_item sd on sd.id_item = h.id
inner join customers d on d.id=sd.id_customer
where h.id=".$this->id." and sd.type=2
order by sd.date, d.name asc";
if($kwer === FALSE) {
die(mysql_error()); // TODO: better error handling
} else {
if($kwer){
$result = mysql_query($kwer);
if (!$result) {
die('Invalid query: ' . mysql_error());
}
var_dump($result);
//die;
if (mysql_num_rows($kwer) != 0){
$res=mysql_query($kwer);
while($row=mysql_fetch_object($res)) {
$items[]=$row->items;
}
}
}
}
return $items;
错误
resource(7) of type (mysql result)
Warning: mysql_num_rows() expects parameter 1 to be resource, string given in /test.php on line 284
修改
$items=array();
$kwer="select distinct(d.id) as item, d.name, sd.date
from sklad h
inner join sent_item sd on sd.id_item = h.id
inner join customers d on d.id=sd.id_customer
where h.id=".$this->id." and sd.type=2
order by sd.date, d.name asc";
if($kwer === FALSE) {
die(mysql_error()); // TODO: better error handling
} else {
if($kwer){
$result = mysql_query($kwer);
if (!$result) {
die('Invalid query: ' . mysql_error());
}
var_dump($result);
//die;
if (mysql_num_rows($result) != 0){
while($row=mysql_fetch_object($result)) {
$items[]=$row->items;
}
}
}
}
return $items;
答案 0 :(得分:1)
变化:
if (mysql_num_rows($kwer) != 0){
到
if (mysql_num_rows($result) != 0){
答案 1 :(得分:0)
你应该尝试这样的事情:
if (mysql_num_rows($result)!=0){