PHP | mysqli_get_proto_info() Function

PHP mysqli_get_proto_info() Function


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_get_proto_info() Function.

The PHP mysqli_get_proto_info() function is used to get the information about (version) of the MYSQL protocol used.

Syntax

Following below is the syntax to use this function -

mysqli_get_proto_info($con);


Parameter Details

Sr.NoParameter & Description
1

con(Optional)

This is an object representing a connection to MySQL Server.


Return Value

This built-in PHP function returns an integer value specifying the version of the MYSQL protocol used.

PHP Version

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

Example1

The following example below illustrates the usage of the PHP mysqli_get_proto_info() function (in a procedural style) -

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

   //Protocol Version
   $info = mysqli_get_proto_info($con);
   print("Protocol Version: ".$info);

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

Output

When the above code is executed, it will produce the following result -

Protocol Version: 10

Example2

In an object oriented style the syntax of this PHP function is $con->protocol_version. The following is the example of this function in an object oriented style -

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

   //Protocol Version
   $info = $con->protocol_version;
   print("Protocol Version: ".$info);

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

Output

When the above code is executed, it will produce the following result -

Protocol Version: 10

Example3

Following is another example of the PHP mysqli_get_protocol_info() function -

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

   $code = mysqli_connect_errno();
   if($code){
      print("Connection Failed: ".$code);
   }else{
      print("Connection Established Successfully"."\n");
      $info = mysqli_get_proto_info($con);
      print("Protocol Version: ".$info);
   }
?>

Output

When the above code is executed, it will produce the following result -

Connection Established Successfully
Protocol Version: 10

Example4

Try the following example below -

<?php
   $con = mysqli_connect("localhost","root", "password", "mydb");
   
   if (mysqli_connect_errno($con)){
      echo "Failed to connect to MySQL: ".mysqli_connect_error();
   }
   echo mysqli_get_proto_info($con);
   
   mysqli_close($con);
?>

Output

When the above code is executed, it will produce the following result -

10


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 built-in mysqli_get_server_info() Function in PHP.

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