从Codeigniter中的数据库检索和更新数据时出错

在我的应用程序控制器中，我有一个方法

transaction\u represent（）

，它以

POST

字符串值的形式接收ID。该方法的功能是从数据库中获取与ID匹配的所有事务，并相应地更新它们

控制器方法：

public function transaction_reimburse() {

    $reimburse = array('reimburse' => 1);
    $transactions = $this->Transaction_model->get_these_ids($this->input->post('ids'));
    $this->Transaction_model->reimburse_these($transactions, $reimburse);

}

function get_these_ids($ids) {

    $this->db->select('tbl_user.name as uname, tbl_transactions.participant_id as pid, tbl_transactions.card_number as card_no, tbl_transactions.group as ugroup, tbl_toilet.name as utoilet, tbl_transactions.amount_paid as u_amount, tbl_transactions.toilet_price as t_price, tbl_transactions.reimburse_amount as r_amount, tbl_transactions.details as u_details');
    $this->db->from('tbl_transactions');
    $this->db->join('tbl_user', 'tbl_user.participant_id = tbl_transactions.participant_id', 'left');
    $this->db->join('tbl_toilet', 'tbl_toilet.toilet_code = tbl_transactions.toilet_code', 'left');
    $this->db->where("tbl_transactions.id IN (". $ids .")");
    return $this->db->get();

}

function reimburse_these($transactions, $reimburse) {

    $this->db->select('tbl_user.name as uname, tbl_transactions.participant_id as pid, tbl_transactions.card_number as card_no, tbl_transactions.group as ugroup, tbl_toilet.name as utoilet, tbl_transactions.amount_paid as u_amount, tbl_transactions.toilet_price as t_price, tbl_transactions.reimburse_amount as r_amount, tbl_transactions.details as u_details');
    $this->db->from('tbl_transactions');
    $this->db->join('tbl_user', 'tbl_user.participant_id = tbl_transactions.participant_id', 'left');
    $this->db->join('tbl_toilet', 'tbl_toilet.toilet_code = tbl_transactions.toilet_code', 'left');
    $this->db->where("tbl_transactions.id IN (". $transactions .")");
    $this->db->update($this->tbl_transaction, $reimburse);

}

A PHP Error was encountered    
Severity: 4096
Message: Object of class CI_DB_mysql_result could not be converted to string
Filename: models/transaction_model.php
Line Number: 450

A Database Error Occurred
Error Number: 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
UPDATE `tbl_transactions` SET `reimburse` = 1 WHERE `tbl_transactions`.`id` IN ()
Filename: C:\xampp\htdocs\ipa\system\database\DB_driver.php
Line Number: 330

模型方法：

public function transaction_reimburse() {

    $reimburse = array('reimburse' => 1);
    $transactions = $this->Transaction_model->get_these_ids($this->input->post('ids'));
    $this->Transaction_model->reimburse_these($transactions, $reimburse);

}

function get_these_ids($ids) {

    $this->db->select('tbl_user.name as uname, tbl_transactions.participant_id as pid, tbl_transactions.card_number as card_no, tbl_transactions.group as ugroup, tbl_toilet.name as utoilet, tbl_transactions.amount_paid as u_amount, tbl_transactions.toilet_price as t_price, tbl_transactions.reimburse_amount as r_amount, tbl_transactions.details as u_details');
    $this->db->from('tbl_transactions');
    $this->db->join('tbl_user', 'tbl_user.participant_id = tbl_transactions.participant_id', 'left');
    $this->db->join('tbl_toilet', 'tbl_toilet.toilet_code = tbl_transactions.toilet_code', 'left');
    $this->db->where("tbl_transactions.id IN (". $ids .")");
    return $this->db->get();

}

function reimburse_these($transactions, $reimburse) {

    $this->db->select('tbl_user.name as uname, tbl_transactions.participant_id as pid, tbl_transactions.card_number as card_no, tbl_transactions.group as ugroup, tbl_toilet.name as utoilet, tbl_transactions.amount_paid as u_amount, tbl_transactions.toilet_price as t_price, tbl_transactions.reimburse_amount as r_amount, tbl_transactions.details as u_details');
    $this->db->from('tbl_transactions');
    $this->db->join('tbl_user', 'tbl_user.participant_id = tbl_transactions.participant_id', 'left');
    $this->db->join('tbl_toilet', 'tbl_toilet.toilet_code = tbl_transactions.toilet_code', 'left');
    $this->db->where("tbl_transactions.id IN (". $transactions .")");
    $this->db->update($this->tbl_transaction, $reimburse);

}

A PHP Error was encountered    
Severity: 4096
Message: Object of class CI_DB_mysql_result could not be converted to string
Filename: models/transaction_model.php
Line Number: 450

A Database Error Occurred
Error Number: 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
UPDATE `tbl_transactions` SET `reimburse` = 1 WHERE `tbl_transactions`.`id` IN ()
Filename: C:\xampp\htdocs\ipa\system\database\DB_driver.php
Line Number: 330

模型方法：

public function transaction_reimburse() {

    $reimburse = array('reimburse' => 1);
    $transactions = $this->Transaction_model->get_these_ids($this->input->post('ids'));
    $this->Transaction_model->reimburse_these($transactions, $reimburse);

}

function get_these_ids($ids) {

    $this->db->select('tbl_user.name as uname, tbl_transactions.participant_id as pid, tbl_transactions.card_number as card_no, tbl_transactions.group as ugroup, tbl_toilet.name as utoilet, tbl_transactions.amount_paid as u_amount, tbl_transactions.toilet_price as t_price, tbl_transactions.reimburse_amount as r_amount, tbl_transactions.details as u_details');
    $this->db->from('tbl_transactions');
    $this->db->join('tbl_user', 'tbl_user.participant_id = tbl_transactions.participant_id', 'left');
    $this->db->join('tbl_toilet', 'tbl_toilet.toilet_code = tbl_transactions.toilet_code', 'left');
    $this->db->where("tbl_transactions.id IN (". $ids .")");
    return $this->db->get();

}

function reimburse_these($transactions, $reimburse) {

    $this->db->select('tbl_user.name as uname, tbl_transactions.participant_id as pid, tbl_transactions.card_number as card_no, tbl_transactions.group as ugroup, tbl_toilet.name as utoilet, tbl_transactions.amount_paid as u_amount, tbl_transactions.toilet_price as t_price, tbl_transactions.reimburse_amount as r_amount, tbl_transactions.details as u_details');
    $this->db->from('tbl_transactions');
    $this->db->join('tbl_user', 'tbl_user.participant_id = tbl_transactions.participant_id', 'left');
    $this->db->join('tbl_toilet', 'tbl_toilet.toilet_code = tbl_transactions.toilet_code', 'left');
    $this->db->where("tbl_transactions.id IN (". $transactions .")");
    $this->db->update($this->tbl_transaction, $reimburse);

}

A PHP Error was encountered    
Severity: 4096
Message: Object of class CI_DB_mysql_result could not be converted to string
Filename: models/transaction_model.php
Line Number: 450

A Database Error Occurred
Error Number: 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
UPDATE `tbl_transactions` SET `reimburse` = 1 WHERE `tbl_transactions`.`id` IN ()
Filename: C:\xampp\htdocs\ipa\system\database\DB_driver.php
Line Number: 330

但是，我得到了以下错误：

public function transaction_reimburse() {

    $reimburse = array('reimburse' => 1);
    $transactions = $this->Transaction_model->get_these_ids($this->input->post('ids'));
    $this->Transaction_model->reimburse_these($transactions, $reimburse);

}

function get_these_ids($ids) {

    $this->db->select('tbl_user.name as uname, tbl_transactions.participant_id as pid, tbl_transactions.card_number as card_no, tbl_transactions.group as ugroup, tbl_toilet.name as utoilet, tbl_transactions.amount_paid as u_amount, tbl_transactions.toilet_price as t_price, tbl_transactions.reimburse_amount as r_amount, tbl_transactions.details as u_details');
    $this->db->from('tbl_transactions');
    $this->db->join('tbl_user', 'tbl_user.participant_id = tbl_transactions.participant_id', 'left');
    $this->db->join('tbl_toilet', 'tbl_toilet.toilet_code = tbl_transactions.toilet_code', 'left');
    $this->db->where("tbl_transactions.id IN (". $ids .")");
    return $this->db->get();

}

function reimburse_these($transactions, $reimburse) {

    $this->db->select('tbl_user.name as uname, tbl_transactions.participant_id as pid, tbl_transactions.card_number as card_no, tbl_transactions.group as ugroup, tbl_toilet.name as utoilet, tbl_transactions.amount_paid as u_amount, tbl_transactions.toilet_price as t_price, tbl_transactions.reimburse_amount as r_amount, tbl_transactions.details as u_details');
    $this->db->from('tbl_transactions');
    $this->db->join('tbl_user', 'tbl_user.participant_id = tbl_transactions.participant_id', 'left');
    $this->db->join('tbl_toilet', 'tbl_toilet.toilet_code = tbl_transactions.toilet_code', 'left');
    $this->db->where("tbl_transactions.id IN (". $transactions .")");
    $this->db->update($this->tbl_transaction, $reimburse);

}

A PHP Error was encountered    
Severity: 4096
Message: Object of class CI_DB_mysql_result could not be converted to string
Filename: models/transaction_model.php
Line Number: 450

A Database Error Occurred
Error Number: 1064
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1
UPDATE `tbl_transactions` SET `reimburse` = 1 WHERE `tbl_transactions`.`id` IN ()
Filename: C:\xampp\htdocs\ipa\system\database\DB_driver.php
Line Number: 330

---

我需要知道的是为什么会出现这些错误？

这些错误意味着

$ids

变量不是字符串格式（意思是：

1,2,3,4

。它可能是一个数组）。要修复它，首先使用

print\r（$ids）

或

var\u dump（$ids）

找出它的格式。了解格式后，使用PHP函数（如

内爆（）

）将其转换为字符串。

中的
正在寻找格式为的集合，例如
（1,2,3,4）

使您的post值采用
1,2,3,4
格式，以便在查询中包含该值时，该值是有效的，或者如果要发送数组，请使用PHP中的方法，例如
内爆（“，”，$array）
要创建所需的格式以绑定到查询中..
我查看了您的两个函数，发现在这两个函数中，您都将tbl_transactions.id放在where子句中，并且id是从post传递过来的，因此不需要调用get_这些id来获取id，您已经在post数组中有了id，因此不再使用transactions变量，只需使用$this->input->post（'id'）来补偿这些函数

如果您确实想从get_This_id函数中获取tbl_事务，那么您需要在get_This_id函数的查询中使用group_concat with group by，只需在get_This_id函数中返回该concated id即可。
您的帖子id的格式是什么？请详细说明$ids format？数组或可能是其他可能性