PHP mysqli_sqlstate() Function

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Definition and Usage

The mysqli_sqlstate() function returns the SQLSTATE error occurred during the last MySQLi function call (MySQL Operation).

Syntax

mysqli_sqlstate($con)

Parameters

Return Values

PHP mysqli_sqlstate() function returns a string value representing the SQLSTATE error occurred during the last MySQL operation. If there are no errors this function returns 00000.

PHP Version

This function was first introduced in PHP Version 5 and works works in all the later versions.

Example

Following example demonstrates the usage of the mysqli_sqlstate() function (in 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);
?>

This will produce following result −

SQL State Error: 42S02

Example

In object oriented style the syntax of this function is $con ->sqlstate. Following is the example of this function in 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();
?>

This will produce following result −

SQL State Error: 42000

Example

Following is another example of the 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($con, "INSERT INTO employee VALUES (Archana, 'Mohonthy', 30, 'M', 13000, 106)");
   print("SQL State Error: ".mysqli_sqlstate($con)."\n");

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

This will produce following result −

SQL State Error: 00000
SQL State Error: 42000
SQL State Error: 42S22

Example

<?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);
?>

This will produce following result −

SQLSTATE error: 42S01