Create Stored Procedures with PDO in PHP

Question

I am reading a TEXT file from PHP and trying to execute commands from it, like creating a DB and all the tables and procedures it has. My code creates the tables but does no

Answer 1

In an effort to keep on topic and answer the question

DELIMITER $$
DROP PROCEDURE IF EXISTS `add_hits`$$
CREATE DEFINER=`root`@`localhost` PROCEDURE `add_hits`( In id varchar(255))
BEGIN
   select hits into @hits from db_books where Book_ID = id;
   update db_books set hits=@hits+1 where Book_ID = id;
END$$

The first occurance of $$ will terminate the DDL so

DROP PROCEDURE IF EXISTS `add_hits`$$

So I think it should be

DELIMITER $$
DROP PROCEDURE IF EXISTS `add_hits`;
CREATE DEFINER=`root`@`localhost` PROCEDURE `add_hits`( In id varchar(255))
BEGIN
   select hits into @hits from db_books where Book_ID = id;
   update db_books set hits=@hits+1 where Book_ID = id;
END
$$

Answer 2

PHP only allows you to execute one query at a time normally, so delimiters are not necessary

$pdo = new PDO('mysql:host=localhost;dbname=test', $user, $pass);
$pdo->exec('DROP PROCEDURE IF EXISTS `add_hits`');
$pdo->exec('CREATE DEFINER=`root`@`localhost` PROCEDURE `add_hits`( In id varchar(255))
 BEGIN
 declare hits_bk int;
 select hits into hits_bk from db_books where Book_ID = id;
 update db_books set hits=hits_bk+1 where Book_ID = id;
 END');

Answer 3

Well, PMA Helped me with answering this Question of my own.
To overcome this you need to remove the delimiter part of the procedure, so that your queries become like:

 DROP PROCEDURE IF EXISTS `add_hits`;
 CREATE DEFINER=`root`@`localhost` PROCEDURE `add_hits`( In id varchar(255))
 BEGIN
 declare hits_bk int;
 select hits into hits_bk from db_books where Book_ID = id;
 update db_books set hits=hits_bk+1 where Book_ID = id;
 END;

Now the queries will work.
Thanks to @Your Common Sense and @RiggsFolly for helping out.