PHP mysqli_error_list()用法及代碼示例

定義和用法

這個mysqli_error_list()函數返回上次 MySQLi 函數調用期間發生的錯誤列表。

用法

mysqli_error_list($con)

參數

Sr.No	參數及說明
1	con(Mandatory) 這是一個表示與 MySQL 服務器的連接的對象。

返回值

PHP mysqli_error_list() 函數返回一個列表，表示執行最後一條語句期間的錯誤(每個錯誤作為一個數組)。

PHP版本

這個函數最初是在 PHP 版本 5 中引入的，適用於所有後續版本。

示例

以下示例演示了 mysqli_error_list() 函數的用法(程序風格) -

<?php
   //Creating a connection
   $con = mysqli_connect("localhost", "root", "password", "mydb");

   mysqli_query($con, "CREATE TABLE Test(Name VARCHAR(10), AGE INT)");


   //Executing the query
   $query = "INSERT into Test values('Raju', 25),('Rahman', 30),('Sri Rama Chandra Murthi', 25)";
   mysqli_query($con, $query);

   //Error
   $list = mysqli_error_list($con);
   print_r($list);

   //Closing the connection
   mysqli_close($con);
?>

這將產生以下結果 -

Array
(
    [0] => Array
        (
            [errno] => 1406
            [sqlstate] => 22001
            [error] => Data too long for column 'Name' at row 3
        )

)

示例

在麵向對象風格中，這個函數的語法是 $con ->error_list。以下是麵向對象風格的此函數的示例 -

<?php
   //Creating a connection
   $con = new mysqli("localhost", "root", "password", "mydb");

   //Query to retrieve all the rows of employee table
   $con -> query("SELECT * FROM wrong_table_name");
  
   //Error 
   $list = $con->error_list;

   print_r($list);

   //Closing the connection
   $con -> close();
?>

這將產生以下結果 -

Array
(
    [0] => Array
        (
            [errno] => 1146
            [sqlstate] => 42S02
            [error] => Table 'mydb.wrong_table_name' doesn't exist
        )

)

示例

假設我們有一個名為employee 的表，其內容如下 -

mysql> select * from employee;
+------------+--------------+------+------+--------+
| FIRST_NAME | LAST_NAME    | AGE  | SEX  | INCOME |
+------------+--------------+------+------+--------+
| Vinay      | Bhattacharya |   20 | M    |  16000 |
| Sharukh    | Sheik        |   25 | M    |  13300 |
| Trupthi    | Mishra       |   24 | F    |  31000 |
| Sheldon    | Cooper       |   25 | M    |   2256 |
| Sarmista   | Sharma       |   28 | F    |  15000 |
+------------+--------------+------+------+--------+
5 rows in set (0.06 sec)

以下是 mysqli_error_list() 函數的另一個示例 -

<?php
   //Creating a connection
   $con = mysqli_connect("localhost", "root", "password", "mydb");

   //Query to SELECT all the rows of the employee table
   mysqli_query($con, "SELECT * FROM employee");
   $list = mysqli_error_list($con);
   print_r($list);

   //Query to UPDATE the rows of the employee table
   mysqli_query($con, "UPDATE employee set INCOME=INCOME+5000 where FIRST_NAME in (*)");
   $list = mysqli_error_list($con);
   print_r($list);

   //Query to INSERT a row into the employee table
   mysqli_query($con, "INSERT INTO employee VALUES (Archana, 'Mohonthy', 30, 'M', 13000, 106)");
   $list = mysqli_error_list($con);
   print_r($list);

   //Closing the connection
   mysqli_close($con);
?>

這將產生以下結果 -

Array
(
)
Array
(
    [0] => Array
        (
            [errno] => 1064
            [sqlstate] => 42000
            [error] => 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
        )

)
Array
(
    [0] => Array
        (
            [errno] => 1136
            [sqlstate] => 21S01
            [error] => Column count doesn't match value count at row 1
        )

)