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.
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)
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
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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