顯示MySQL查詢數據作爲陣列

Question

如何顯示MySQL查詢結果作爲數組

mydeptid是一個數組

$sql = "SELECT * FROM ".$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

作爲每查詢，我明白，你有一個部門ID的數組。因此，在查詢中使用它們之前，必須將它們轉換爲字符串。請檢查並嘗試以下代碼：

$sql = "SELECT * FROM ".$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

使用具有單個查詢中的JOIN

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