显示MySQL查询数据作为阵列

Question

如何显示MySQL查询结果作为数组

mydeptid是一个数组

$sql = "SELECT * FROM ".$DB->prefix("settings")." WHERE uid='$myuid'"; 
$result = $DB->query($sql); 

while($row = $DB->fetchArray($result)) 
{ 
$uid=$row['uid']; 
$mydeptid[]=$row['deptid']; 


} 

$sql="SELECT * FROM DEPARTMENTS WHERE DEPTID=$mydeptid ORDER BY DEPTNAME ASC"; 

Answer 1

作为每查询，我明白，你有一个部门ID的数组。因此，在查询中使用它们之前，必须将它们转换为字符串。请检查并尝试以下代码：

$sql = "SELECT * FROM ".$DB->prefix("settings")." WHERE uid='$myuid'"; 
$result = $DB->query($sql); 

while($row = $DB->fetchArray($result)) 
{ 
$uid=$row['uid']; 
$mydeptid[]=$row['deptid']; 
} 

$allDeptIds = implode(",", $mydeptid); 

$sql="SELECT * FROM DEPARTMENTS WHERE DEPTID in ($allDeptIds) ORDER BY DEPTNAME ASC"; 

Answer 2

使用具有单个查询中的JOIN

$sql = "SELECT D.* FROM ".$DB->prefix("settings")." T 
JOIN DEPARTMENTS D ON D.DEPTID=T.deptid WHERE uid='$myuid'";