Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP mysqli_error_list() Function.
The mysqli_error_list() function returns the list of errors which occurred during the last MYSQLi function call.
The mysqli_error_list() function returns the list of errors which occurred during the last MYSQLi function call.
Syntax
Following below is the syntax to use this function -
mysqli_error_list($con)
Parameter Details
Sr.No | Parameter & Description |
---|---|
1 | con(Mandatory) This is an object representing a connection to MySQL Server. |
Return Value
This function returns a list representing the errors (each of the error as an array) during the execution of the last function call.
PHP Version
This PHP function was first introduced in PHP version 5 and it works in all the later versions.
Example1
The following example illustrates the usage of the PHP mysqli_error_list() function (in a procedural style) -
<?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 $query = "INSERT into Test values('Kennedy', 27),('Paul', 30),('Blessing Dauglas Queen Mikel', 25)"; mysqli_query($con, $query); //Error $list = mysqli_error_list($con); print_r($list); //Closing the connection mysqli_close($con); ?>
Output
When the above code is executed, it will produce the following result -
Array ( [0] => Array ( [errno] => 1406 [sqlstate] => 22001 [error] => Data too long for column 'Name' at row 3 ) )
Example2
In an object oriented style the syntax of this PHP function is $con->error_list(); Following is the example of this function in an object oriented style $minus;
<?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(); ?>
Output
When the above code is executed, it will produce the following result -
Array ( [0] => Array ( [errno] => 1146 [sqlstate] => 42S02 [error] => Table 'mydb.wrong_table_name' doesn't exist ) )
Example3
Assume we have a table named employee with the following content -
mysql> select * from employee; +------------+--------------+------+------+--------+ | FIRST_NAME | LAST_NAME | AGE | SEX | INCOME | +------------+--------------+------+------+--------+ | Kennedy | Nkpara | 27 | M | 16000 | | Justice | Dauglas | 27 | M | 13300 | | Justice | Donald | 28 | M | 31000 | | Stephanie | Francis | 23 | F | 2256 | | Bethel | Igwela | 27 | M | 15000 | +------------+--------------+------+------+--------+ 5 rows in set (0.06 sec)
Following is another example of the built-in PHP mysqli_error_list() function -
<?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 (Precious, 'Amah', 25, 'F', 13000, 106)"); $list = mysqli_error_list($con); print_r($list); //Closing the connection mysqli_close($con); ?>
Output
When the above code is executed, it will produce the following result -
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 ) )
Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial, we are going to be studying about the PHP mysqli_field_count() Function.
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