PHP | mysqli_next_result() 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_next_result() Function.

The mysqli_next_result() function prepares the next result from the past multi-query. You can retrieve the prepared resultset by 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 PHP function was first introduced in PHP version 5 and it works in all the later versions.

Example1

The following example illustrates the usage of the 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 an object oriented style the syntax of this built-in PHP function is $con->next_result(); The following is the example of this built-in 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 going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the PHP mysqli_options() Function.

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