Pete Freitag Pete Freitag

Prepared Statements in PHP and MySQL


I'm working on a web security presentation, and I was curious to know if PHP supported prepared statements. It looks like as of PHP 5 they do support it with the new mysqli object (mysqli replaces the mysql class with support for mysql 4.x features)

Here's how you do a prepared statement with php 5 and mysql (error checking is omitted):

$db_connection = new mysqli("localhost", "user", "pass", "db");
$statement = $db_connection->prepare("SELECT thing FROM stuff WHERE id = ?");
$statement->bind_param("i", $id);

The first argument of bind_param is the type, in this case I used i for integer - you can also use s for string, d for double, and b for blob.

The variables in your query are represented with the ? question marks, just like with JDBC. This makes maintenance kind of a pain, it makes you appreciate CFML's prepared statement implementation with cfqueryparam.

You can also use PEAR:DB to run prepared statements in PHP, since it is a database abstraction layer, it is probably a good way to go.

MySQL supports prepared statements in version 4.1 and above.

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Prepared Statements in PHP and MySQL was first published on May 16, 2005.

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pls help me . i had created a unique id in php and its not inserted in the database.
$prefix = 'W'; // a universal prefix prefix
$my_random_id = $prefix;
$my_random_id .= chr(rand(65,90));
$my_random_id .= time();
$my_random_id .= $prefix;
i had used this coding
and msql query as
print $my_random_id;
$qurey="INSERT INTO FeedBackDetails (Name,Age,DateOfBirth,Gender,Adress,PhoneNo,MobileNo,Email,Profession,Comments,CustomerId)
by sreekandan.N on 09/13/2006 at 4:59:41 AM UTC
Hi, i need an urgent help, In mysql Without using the prepare statement how to assign
dynamicaly a table name in a procedure. the sample coding is given bellow.

create procedure table_name(x varchar(100))
select * from x;

call table_name('books');

It shows an error message table x doesnot existt

Any one can help me how to solve this problem
by J Selvakumar Micheal on 12/06/2007 at 5:06:14 AM UTC
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by Melissa on 05/28/2008 at 4:18:18 AM UTC