我正在运行
$this->db->query("SELECT `id` FROM $table WHERE $table.id ='$product_id'");
应该返回92
但是它返回下面的原因?
对象(CI_DB_mysqli_result)#150(8){[“conn_id”] =>对象(mysqli的)#16 (18){[“affected_rows”] => int(1)[“client_info”] => string(6)“5.5.30” [ “client_version”] => int(50530)[“connect_errno”] => INT(0) [ “connect_error”] => NULL [“errno”] => int(0)[“error”] => string(0)“” [ “场计数”] => int(1)[“host_info”] => string(25)“Localhost via UNIX套接字“[”info“] => NULL [”insert_id“] => int(0)[”server_info“] => string(10)“5.5.31-cll”[“server_version”] => int(50531)[“stat”] => string(150)“正常运行时间:106781主题:14个问题:30097132慢 查询:13打开:1937675刷新表:1打开表:400查询 每秒平均值:281.858“[”sqlstate“] =>字符串(5)”00000“ [ “PROTOCOL_VERSION”] => int(10)[“thread_id”] => INT(373292) [ “WARNING_COUNT”] => int(0)} [“result_id”] =>对象(mysqli_result)#161 (5){[“current_field”] => int(0)[“field_count”] => INT(1) [ “长度”] => NULL [“num_rows”] => int(1)[“type”] => int(0)} [ “result_array”] => array(0){} [“result_object”] =>数组(0){} [ “custom_result_object”] => array(0){} [“current_row”] => INT(0) [ “NUM_ROWS”] => NULL [“row_data”] => NULL}
答案 0 :(得分:4)
它正在返回mysqli_ object.So尝试获取结果,如
$query = $this->db->query("SELECT `id` FROM $table WHERE $table.id ='$product_id'");
$result = $query->result();
foreach($result as $row)
{
echo "Id is ".$row['id']."<br>";
}
你可以使用mysqli_ *函数代替不推荐使用的mysql_ *函数
答案 1 :(得分:2)
它正在返回一个mysqli_result
对象,就像manual所说的那样。
要获得实际id
,您需要在对象上调用fetch_assoc()
(或类似)。
if ($result = $this->db->query("SELECT id FROM $table WHERE $table.id ='$product_id'")) {
/* fetch associative array */
while ($row = $result->fetch_assoc()) {
printf ("Fetched ID: %s\n", $row["id"]);
}
/* free result set */
$result->free();
}
答案 2 :(得分:0)
基本上是声明:
$mysqli = new mysqli("localhost","rinonymous","03318987165oo","rinonymous");
if ($mysqli->connect_errno) {
print_r($mysqli->connect_error);
exit();
}
$site_title = "Rinonymous";
$page_title = "";
$page_body = "";
#Page Setup
$query_page_info = "select * from pages where id = 1";
foreach ($mysqli->query($query_page_info) as $row) {
print_r($mysqli->query($query_page_info));
#query method returns an associate array
print_r($row);
$page_title = $row['title'];
$page_body = $row['body'];
}
返回一个对象,可用于提取结果集或表并分配给变量...因此您需要创建变量和将结果集指定为:
{{1}}