PHP mysqli_stmt_bind_result() Function

The mysqli_stmt_bind_result() function is used to bind 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.
mysqli_stmt_bind_result($stmt, $var1, $var2...);

stmt(Mandatory)
This is an object representing a prepared statement.
var1(Mandatory)
This represent the variable(s) to be bound to the columns.
The PHP mysqli_stmt_bind_result() function returns a boolean value which is true on success and false on failure.
This function was first introduced in PHP Version 5 and works works in all the later versions.
Following example demonstrates the usage of the mysqli_stmt_bind_result() function (in 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, 'Sikhar', 'Dhawan', 'Delhi', 'India')");
   mysqli_query($con, "INSERT INTO myplayers values(2, 'Jonathan', 'Trott', 'CapeTown', 'SouthAfrica')");
   mysqli_query($con, "INSERT INTO myplayers values(3, 'Kumara', 'Sangakkara', 'Matale', 'Srilanka')");
   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);
?>
This will produce following result −
Table Created.....
Record Inserted.....
Id: 1
fname: Sikhar
lname: Dhawan
pob: Delhi
country: India

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

Id: 3
fname: Kumara
lname: Sangakkara
pob: Matale
country: Srilanka

In object oriented style the syntax of this function is $stmt->bind_result(); Following is the example of this function in 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('Raju', 25),('Rahman', 30),('Sarmista', 27)");
   print("Table Created.....\n");

   $stmt = $con -> prepare( "SELECT * FROM Test WHERE Name in(?, ?)");
   $stmt -> bind_param("ss", $name1, $name2);
   $name1 = 'Raju';
   $name2 = 'Rahman';
   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();
?>
This will produce following result −
Table Created.....
Records Deleted.....
Name: Raju
Age: 25
Name: Rahman
Age: 30

Following example fetches the results of the DESCRIBE query using mysqli_stmt_bind_result() and 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);
?>
This will produce 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:

Following example fetches the results of the SHOW TABLES query using mysqli_stmt_bind_result() and 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);
?>
This will produce following result −
Tables Created.....
List of tables in the current database:
test1
test2
test3


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