PHP | mysqli_stmt_bind_result() Function

PHP mysqli_stmt_bind_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_stmt_bind_result() Function.

The built-in PHP mysqli_stmt_bind_result() function binds the columns of a result set to variables. After binding variables, you need to invoke the mysqli_stmt_fetch() function to get the values of the columns in the specified variables.

Syntax

Following below is the syntax to use this function -

mysqli_stmt_bind_result($stmt, $var1, $var2...);


Parameter Details

Sr.NoParameter & Description
1

stmt(Mandatory)

This is an object representing a prepared statement.

2

var1(Mandatory)

This represent the variable(s) to be bound to the columns.


Return Value

This built-in PHP function returns TRUE on success and FALSE on failure.

PHP Version

This 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_stmt_bind_result() function (in a procedural style) -

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

   mysqli_query($con, "CREATE TABLE myplayers(ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Place_Of_Birth VARCHAR(255), Country VARCHAR(255))");
   print("Table Created.....\n");
   mysqli_query($con, "INSERT INTO myplayers values(1, 'Kennedy', 'Nkpara', 'PortHarcourt', 'Nigeria')");
   mysqli_query($con, "INSERT INTO myplayers values(2, 'Jonathan', 'Trott', 'CapeTown', 'SouthAfrica')");
   mysqli_query($con, "INSERT INTO myplayers values(3, 'Queen', 'Douglas', 'Texas', 'UnitedStates')");
   print("Record Inserted.....\n");

   //Retrieving the contents of the table
   $stmt = mysqli_prepare($con, "SELECT * FROM myplayers");

   //Executing the statement
   mysqli_stmt_execute($stmt);

   //Binding values in result to variables
   mysqli_stmt_bind_result($stmt, $id, $fname, $lname, $pob, $country);

   while (mysqli_stmt_fetch($stmt)) {
      print("Id: ".$id."\n");
      print("fname: ".$fname."\n");
      print("lname: ".$lname."\n");
      print("pob: ".$pob."\n");
      print("country: ".$country."\n");
      print("\n");

   }
   //Closing the statement
   mysqli_stmt_close($stmt);

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

Output

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

Table Created.....
Record Inserted.....
Id: 1
fname: Kennedy
lname: Nkpara
pob: PortHarcourt
country: Nigeria

Id: 2
fname: Jonathan
lname: Trott
pob: CapeTown
country: SouthAfrica

Id: 3
fname: Queen
lname: Douglas
pob: Texas
country: UnitedStates

Example2

In an object oriented style the syntax of this function is $stmt->bind_result(); Following is the example of this function in an object oriented style $minus -

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

   $con -> query("CREATE TABLE Test(Name VARCHAR(255), AGE INT)");
   $con -> query("insert into Test values('Kennedy', 27),('Paul', 30),('Justice', 28)");
   print("Table Created.....\n");

   $stmt = $con -> prepare( "SELECT * FROM Test WHERE Name in(?, ?)");
   $stmt -> bind_param("ss", $name1, $name2);
   $name1 = 'Kennedy';
   $name2 = 'Paul';
   print("Records Deleted.....\n");

   //Executing the statement
   $stmt->execute();

   //Binding variables to resultset
   $stmt->bind_result($name, $age);
   while ($stmt->fetch()) {
      print("Name: ".$name."\n");
      print("Age: ".$age."\n");
   }

   //Closing the statement
   $stmt->close();

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

Output

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

Table Created.....
Records Deleted.....
Name: Kennedy
Age: 27
Name: Paul
Age: 30

Example3

Following example fetches the results of the DESCRIBE query using the built-in PHP mysqli_stmt_bind_result() and the built-in PHP mysqli_stmt_fetch() functions -

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

   mysqli_query($con, "CREATE TABLE myplayers(ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Place_Of_Birth VARCHAR(255), Country VARCHAR(255))");
   print("Table Created.....\n");

   //Description of the table
   $stmt = mysqli_prepare($con, "DESC myplayers");

   //Executing the statement
   mysqli_stmt_execute($stmt);

   //Binding values in result to variables
   mysqli_stmt_bind_result($stmt, $field, $type, $null, $key, $default, $extra);

   while (mysqli_stmt_fetch($stmt)) {
      print("Field: ".$field."\n");
      print("Type: ".$type."\n");
      print("Null: ".$null."\n");
      print("Key: ".$key."\n");
      print("Default: ".$default."\n");
      print("Extra: ".$extra."\n");
      print("\n");
   }

   //Closing the statement
   mysqli_stmt_close($stmt);

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

Output

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

Table Created.....
Field: ID
Type: int(11)
Null: YES
Key:
Default:
Extra:

Field: First_Name
Type: varchar(255)
Null: YES
Key:
Default:
Extra:

Field: Last_Name
Type: varchar(255)
Null: YES
Key:
Default:
Extra:

Field: Place_Of_Birth
Type: varchar(255)
Null: YES
Key:
Default:
Extra:

Field: Country
Type: varchar(255)
Null: YES
Key:
Default:
Extra:

Example4

The following below example fetches the results of the SHOW TABLES query using the built-in PHP mysqli_stmt_bind_result() and the built-in PHP mysqli_stmt_fetch() functions -

<?php
   $con = mysqli_connect("localhost", "root", "password");

   //Selecting the database
   mysqli_query($con, "CREATE DATABASE NewDatabase");
   mysqli_select_db($con, "NewDatabase");

   //Creating tables
   mysqli_query($con, "CREATE TABLE test1(Name VARCHAR(255), Age INT)");
   mysqli_query($con, "CREATE TABLE test2(Name VARCHAR(255), Age INT)");
   mysqli_query($con, "CREATE TABLE test3(Name VARCHAR(255), Age INT)");
   print("Tables Created.....\n");

   //Description of the table
   $stmt = mysqli_prepare($con, "SHOW TABLES");

   //Executing the statement
   mysqli_stmt_execute($stmt);

   //Binding values in result to variables
   mysqli_stmt_bind_result($stmt, $table_name);

   print("List of tables in the current database: \n");
   while (mysqli_stmt_fetch($stmt)) {
      print($table_name."\n");
   }

   //Closing the statement
   mysqli_stmt_close($stmt);

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

Output

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

Tables Created.....
List of tables in the current database:
test1
test2
test3


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 mysqli_stmt_close() Function in PHP.

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