接受多个参数的存储过程

Question

It's my first time working with stored procedures.

The previous developer already had a stored procedure in place that works, but it only accepts 1 parameter.

I am using PHP to pass the parameters:

 <?php
   $containers = $_POST['cntnum'];

   $shortened = array();
   foreach($containers as $short)
   {
     $shortened[] = substr($short, 0, 10);
   }
   $sans_check = preg_replace('/\n$/','',preg_replace('/^\n/','',preg_replace('/[\r\n]+/',"\n",$shortened)));
   $sans = "'" . implode("', '", $sans_check) ."'";

   // At this point, $sans looks like this: 'value1', 'value2', 'value3'... 

   // now I send $sans to the stored procedure
   $thecall = mysqli_query($dbc, "CALL SP_ContSearch_TEST($sans)");
 ?>

I can send 1 value with no problem. I get back the data. But when there are more than 1, I get the following error:

Incorrect number of arguments for PROCEDURE table.storeprocedure; expected 1, got 3

Here is what the stored procedure looks like (shortened for time):

Begin
  DECLARE sans_check varchar(100);  // adjusted from 10, but same error message
  SET sans_check = SUBSTR(cont,1,10);
  SELECT
    `inventory`
    ,delivery_date
    ,pool
  FROM 
    inventory
  WHERE
    CONTAINER_CHECK IN (cont);
  END

The parameter cont is varchar(11) // not sure if that means anything

This is my first attempting a stored procedure call, and I can return data for one value. I need to return data for multiple values.

Answer 1

The error message is absolutely right. You are sending 3 parameters to a stores procedure which takes only one.

What you've done is you have modified the stored proc which takes a single string such that it still expects a single string.

You should modify the definition of the stored procedure to take 3 parameters (that part is missing in your question)

Here is an example of a stored proc declaration with 3 parameters:

 CREATE PROCEDURE SP_ContSearch_TEST
    (IN sans1 CHAR(10),
     IN sans2 CHAR(10),
     IN sans3 CHAR(10)
     -- add as many other parameters here as you need
    )
 BEGIN
     -- your stored proc logic here.. can use sans1, sans2, and sans3
 END

You should also change your code to use parameterized queries instead of the way you're doing right now. See: http://php.net/manual/en/pdo.prepared-statements.php or http://php.net/manual/en/mysqli.prepare.php