我的php文件中有那段代码(正常工作):
$db = new Database();
$stmt = $db->prepare("SELECT * FROM bills WHERE group_id=:gid");
$stmt->bindValue(":gid", $_SESSION['group_id'], SQLITE3_INTEGER);
if (($result = $stmt->execute()) === false) {
echo "bad";
}
$bills = $result;
while ($bill = $bills->fetchArray()) {
do stuff....
}
然后我尝试将所有与数据库相关的代码放在函数中:
function getBillsByGID($gid) {
$db = new Database();
$stmt = $db->prepare("SELECT * FROM bills WHERE group_id=:gid");
$stmt->bindValue(":gid", $gid, SQLITE3_INTEGER);
if (($result = $stmt->execute()) === false) {
return null;
}
return $result;
}
在原始文件中:
$bills = getBillsByGID($_SESSION['group_id']);
while ($bill = $bills->fetchArray()) {
do stuff...
}
这会给我留言:"Warning: SQLite3Result::fetchArray(): The SQLite3Result object has not been correctly initialised in line 61"
(与while($bill = $bills->fetchArray()
一致))
var_dump($bills)
会给出object(SQLite3Result)#10 (0) { }
那么我该如何制作一个能正常工作的功能?
答案 0 :(得分:5)
您是否在关闭getBillsByGID中的语句?调用$ stmt-> close()会使您从$ stmt-> execute()获得的结果无效。之后,调用$ result-> fetchArray()将给出错误“SQLite3Result对象未在......中正确初始化”。
答案 1 :(得分:1)
我认为您需要在函数中获取数据,然后返回变量
function getBillsByGID($gid) {
$db = new Database();
$stmt = $db->prepare("SELECT * FROM bills WHERE group_id=:gid");
$stmt->bindValue(":gid", $gid, SQLITE3_INTEGER);
if ($stmt->execute() === false) {
return null;
}
$array = array();
while($data = $stmt->fetchArray())
{
$array[] = $data;
}
return $array;
}
现在将函数分配给变量并循环抛出以获取数组的数据
$bills = getBillsByGID($_SESSION['group_id']);
foreach($bills as $data) {
//do stuff with $data
}