PHP | mysqli_real_connect() Function

PHP mysqli_real_connect() 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_real_connect() Function.

The PHP mysqli_real_connect() function establishes a connection with the MYSQL server and returns the connection as an object.

The built-in PHP mysqli_real_connect() differs from the PHP mysqli_connect() in the following ways -

  • PHP mysqli_real_connect() function needs a valid object which has to be created by the mysqli_init() function.
  • It can be used with the built-in PHP mysqli_options() for setting various options for the connection.
  • It has a flag parameter.

Syntax

Following below is the syntax to use this function -

mysqli_real_connect($con,[$host, $username, $passwd, $dname, $port, $socket, $flags] )


Parameter Details

Sr.NoParameter & Description
1

con(Optional)

This is an object representing a connection to MySQL Server.

2

host(Optional)

This represents a host name or an IP address. If you pass Null or localhost as a value to this parameter, the local host is considered as host.

3

username(Optional)

This represents a user name in MySQL.

4

passwd(Optional)

This is represents the password to the given user.

5

dname(Optional)

This represents the default database in which the queries should be performed.

6

port(Optional)

This represents the port number at which you want to establish a connection to MySQL Server.

7

socket(Optional)

This represents the socket that is to be used.

8

flags(Optional)

An integer value representing different connection options this can be one of the following constants −

  • MYSQLI_CLIENT_COMPRESS

  • MYSQLI_CLIENT_FOUND_ROWS

  • MYSQLI_CLIENT_IGNORE_SPACE

  • MYSQLI_CLIENT_INTERACTIVE

  • MYSQLI_CLIENT_SSL

  • MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT


Return Value

This built-in PHP function returns true if the connection was successful, otherwise false on failure.

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 shows the usage of the PHP mysqli_real_connect() function (in a procedural style) -

<?php
   $db = mysqli_init();
   //Creating the connection
   $con = mysqli_real_connect($db, "localhost","root","password","test");
   if($con){
      print("Connection Established Successfully");
   }else{
      print("Connection Failed ");
   }
?>

Output

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

Connection Established Successfully

Example2

In object oriented style the syntax of this PHP function is $con->real_connect(); The following is the example of this function in an object oriented style $minus;

<?php
   $db = mysqli_init();
   //Connecting to the database
   $con = $db->real_connect("localhost","root","password","test");

   if($con){
      print("Connection Established Successfully");
   }else{
      print("Connection Failed ");
   }
?>

Output

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

Connection Established Successfully

Example3

Try the following example below -

<?php
   $connection_mysql = mysqli_init();
   
   if (!$connection_mysql){
      die("mysqli_init failed");
   }
   
   if (!mysqli_real_connect($connection_mysql,"localhost","root","password","mydb")){
      die("Connect Error: " . mysqli_connect_error());
   }else{
	  echo "Connection was successful";
   }
   mysqli_close($connection_mysql);
?>

Output

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

Connection was successful


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_real_escape_string() Function.

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