Re: POST a variable

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On Fri, March 23, 2007 9:45 am, Dan Shirah wrote:
> Okay, I feel like the correct answer to this is about 2mm back in my
> grey
> matter.
>
> 1. I have a query that pulls the last row number when a newly inserted
> record is added:
>
> $maximum="SELECT MAX(payment_id) FROM payment_request";
>   $max_result=mssql_query($maximum);
>   while($max=mssql_fetch_row($max_result)){
>   }
>   $max_id = $max[0];

DO NOT DO THIS!!!

As soon as *TWO* people hit your site at the same time, this will blow
up in your face.

Use this:
http://php.net/mysql_insert_id

> 2. I have multiple selections for the user to pick, but regardless of
> what
> they choose I want the $max_id variable to be passed to the next page.
>
> 3.  Would I go about this by assigning $max_id to a hidden field like
> below?
>
> <input type="hidden" value="<?php echo "$max_id"; ?>" size="5"
> maxlength="10" name="max_id" />

Yes.

Though the size and maxlength are kinda silly on a "hidden" input...

> 4.  And then to retrieve this value on my next page just get it out of
> $_POST['max_id']  ??
>
> Does that all sound correct?

Try it and see.

-- 
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