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_sqlstate() Function.
The built-in PHP mysqli_sqlstate() function returns the SQLSTATE error which occurred during the last MYSQLi function call.
The built-in PHP mysqli_sqlstate() function returns the SQLSTATE error which occurred during the last MYSQLi function call.
Syntax
Following below is the syntax to use this function -
mysqli_sqlstate($con)
Parameter Details
Sr.No | Parameter & Description |
---|---|
1 | con(Mandatory) This is an object representing a connection to MySQL Server. |
Return Value
This built-in PHP function returns a string value representing the SQLSTATE error that occurred during the last MYSQL operation. If no error occurred, this function returns 00000.
PHP Version
This PHP function was first introduced in PHP version 5 and works in all the later versions.
Example1
The following below is an example which shows the usage of PHP mysqli_sqlstate() function (in a procedural style) -
<?php //Creating a connection $con = mysqli_connect("localhost", "root", "password", "mydb"); //Query to retrieve all the records of a table mysqli_query($con, "Select * from WrongTable"); //SQL State $state = mysqli_sqlstate($con); print("SQL State Error: ".$state); //Closing the connection mysqli_close($con); ?>
Output
When the above code is executed, it will produce the following result -
SQL State Error: 42S02
Example2
In an object oriented style the syntax of this function is $con->sqlstate. Following is the example of this PHP function in an object oriented style -
<?php //Creating a connection $con = new mysqli("localhost", "root", "password", "mydb"); //Query to retrieve all the records of the employee table $con -> query("Select FIRST_NAME, LAST_NAME, AGE form employee"); //SQL State $state = $con->sqlstate; print("SQL State Error: ".$state); //Closing the connection $con -> close(); ?>
Output
When the above code is executed, it will produce the following result -
SQL State Error: 42000
Example3
Following is another example of the PHP mysqli_sqlstate() 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"); print("SQL State Error: ".mysqli_sqlstate($con)."\n"); //Query to UPDATE the rows of the employee table mysqli_query($con, "UPDATE employee set INCOME=INCOME+5000 where FIRST_NAME in (*)"); print("SQL State Error: ".mysqli_sqlstate($con)."\n"); //Query to INSERT a row into the employee table mysqli_query($con, "INSERT INTO employee VALUES (Paul, 'Francis', 30, 'M', 13000, 106)"); print("SQL State Error: ".mysqli_sqlstate($con)."\n"); //Closing the connection mysqli_close($con); ?>
Output
When the above code is executed, it will produce the following result -
SQL State Error: 00000 SQL State Error: 42000 SQL State Error: 42S22
Example4
Try the following example below -
<?php $connection_mysql = mysqli_connect("localhost", "root", "password", "mydb"); if (mysqli_connect_errno($connection_mysql)){ echo "Failed to connect to MySQL: " . mysqli_connect_error(); } //Assume we already have a table named Persons in the database mydb $sql = "CREATE TABLE Persons (Firstname VARCHAR(30),Lastname VARCHAR(30),Age INT)"; if (!mysqli_query($connection_mysql,$sql)){ echo "SQLSTATE error: ". mysqli_sqlstate($connection_mysql); } mysqli_close($connection_mysql); ?>
Output
When the above code is executed, it will produce the following result -
SQLSTATE error: 42S01
Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP mysqli_ssl_set() Function.
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