PHP mysqli_stmt_bind_param() Function

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Definition and Usage

The mysqli_stmt_bind_param() function is used to bind variables to the parameter markers of a prepared statement.

Syntax

mysqli_stmt_bind_param($stmt, $types, $var1, $var2...);

Parameters

Sr.No Parameter & Description
1

stmt(Mandatory)

This is an object representing a prepared statement.
2

types(Mandatory)

A string (of individual characters) specifying the types of the variables where −

  • i represents an integer type

  • d represents an double type

  • s represents an string type

  • b represents an blob type
3

var(Mandatory)

Values for the variables, separated by commas.

Return Values

The PHP mysqli_stmt_bind_param() function returns a boolean value which is true on success and false on failure.

PHP Version

This function was first introduced in PHP Version 5 and works works in all the later versions.

Example

Following example demonstrates the usage of the mysqli_stmt_bind_param() function (in procedural style) −

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

   //Creating a table
   $con -> query("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");

   //Inserting values into the table using prepared statement
   $stmt = $con -> prepare( "INSERT INTO myplayers values(?, ?, ?, ?, ?)");

   //Binding values to the parameter markers
   $stmt -> bind_param("issss", $id, $fname, $lname, $pob, $country);
   $id = 1;
   $fname = 'Shikhar';
   $lname = 'Dhawan';
   $pob = 'Delhi';
   $country = 'India';

   //Executing the statement
   $stmt->execute();
   //Closing the statement
   $stmt->close();
   //Closing the connection
   $con->close();
?>

This will produce following result −

Table Created.....

Example

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

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

   //Creating a table
   $con -> query("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");

   //Inserting values into the table using prepared statement
   $stmt = $con -> prepare( "INSERT INTO myplayers values(?, ?, ?, ?, ?)");

   //Binding values to the parameter markers
   $stmt -> bind_param("issss", $id, $fname, $lname, $pob, $country);
   $id = 1;
   $fname = 'Shikhar';
   $lname = 'Dhawan';
   $pob = 'Delhi';
   $country = 'India';

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

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

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

This will produce following result −

Table Created.....

Example

Following is another example of this function −

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

   mysqli_query($con, "CREATE TABLE Test(Name VARCHAR(255), AGE INT)");
   print("Table Created.....\n");
   mysqli_query($con, "insert into Test values('Raju', 25),('Rahman', 30),('Sarmista', 27)");
   print("Records Inserted.....\n");

   $stmt = mysqli_prepare($con, "DELETE FROM test where Age<?");
   mysqli_stmt_bind_param($stmt, "i", $num);
   $num = 28;
   //Executing the statement
   mysqli_stmt_execute($stmt);

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

This will produce following result −

Table Created.....
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