passing url parameters to mysql recordset

firstly please accept apologies not describing problem have sufficiently. relatively new php , mysql.

 

i have php page list results of recordset of manufacturer. each recordset has "make" id , label name.

 

the label links page show products name of manufacturer passing make id page (using link parameters, name make, value integer id recordet).  on second page recordset displays products.  on page category links (from different recordset) allowing user filter records based on category (tables linked in mysql database).

 

the third page filters results taking make , category id , displays results. far good, working.

 

my problem when the recordset in particular category particular manufacturer contains no records, make id integer drops.

 

this frustrating.

 

this on new website i'm developing , design etc far complete.  pages can viewed @ www.lcgcpartfinder.co.uk/new_parts.php

 

if click shimadzu link , filter category, final category gcms, shows problem have when select category.

 

any or advice how can overcome issue.

 

regards

how assigning make id querystring parameter? seems might getting recordset, don't want do. try saving local variable instead. other that, we'd need see code tell going wrong.

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