PHP | mysqli_next_result() Function

Hello folks! welcome back to another edition of our tutorial on PHP. In this tutorial guide, we are going to be discussing about the PHP mysqli_next_result() Function.

The built-in PHP mysqli_next_result() function prepares the next result from the previous multi-query. You can retrieve the prepared resultset using the built-in PHP mysqli_use_result() function.

Syntax

Following below is the syntax to use this function -

mysqli_next_result($con)

READ: PHP | mysqli_multi_query() Function

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 true if there are more resultsets and false if there are no more resultsets, or if the next query have errors.

PHP Version

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

Example1

The following below is an example which demonstrates the usage of PHP mysqli_next_result() function (in a procedural style) -

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

   //Executing the multi query
   $query = "SELECT * FROM players;SELECT * FROM emp;SELECT * FROM tutorials";
   $res = mysqli_multi_query($con, $query);

   $count = 0;

   if ($res) {
      do {
         $count = $count+1;
	     mysqli_use_result($con);
      } while (mysqli_next_result($con));
   }
   print("Number of result sets: ".$count);
   mysqli_close($con);
?>

Output

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

Number of result sets: 3

Example2

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

<?php
   $con = new mysqli("localhost", "root", "password", "test");

   //Multi query
   $res = $con->multi_query("SELECT * FROM players;SELECT * FROM emp;SELECT * FROM tutorials");

   $count = 0;
   if ($res) {
      do {
         $count = $count+1;
         $con-> use_result();
      } while ($con->next_result());
   }
   print("Number of result sets: ".$count);

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

Output

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

Number of result sets: 3

Example3

The following example below retrieves the records of all resultsets of the multi-query -

//Creating a connection
$con = mysqli_connect("localhost", "root", "password", "test");

//Executing the multi query
$query = "SELECT * FROM players;SELECT * FROM emp";

$res = mysqli_multi_query($con, $query);

if ($res) {
    do {
        if ($result = mysqli_use_result($con)) {
            while ($row = mysqli_fetch_row($result)) {
                print("Name: ".$row[0]."\n");
				print("Age: ".$row[1]."\n");
            }
            mysqli_free_result($result);
        }
        if (mysqli_more_results($con)) {
            print("\n");
        }
    } while (mysqli_next_result($con));
}

mysqli_close($con);

Output

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

Name: Prince
Age: 28
Name: Bethel
Age: 27
Name: Stephanie
Age: 24

Name: Kennedy
Age: 27
Name: Paul
Age: 30
Name: Justice
Age: 28

READ: PHP | mysqli_insert_id() Function

Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial, we will discuss about the PHP mysqli_options() Function.

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