php - MySQL query updating depending on $_POST values -


i having trouble thinking out way update query depending on user $_post values. have user management search button, site administrator can search sites users. in example:

<div id="website_user_management_search_left"> <div id="website_user_management_search_left_leftside">     <p>name:</p>     <p>surname:</p>     <p>telephone:</p>     <p>group:</p>     <p>discount group:</p> </div> <div id="website_user_management_search_left_rightside">     <input type="text" name="#" value="#" id="usersearch_name">     <input type="text" name="#" value="#" id="usersearch_surname">     <input type="text" name="#" value="#">     <input type="text" name="#" value="#">     <input type="text" name="#" value="#">     <input type="submit" id="button_adminusersearch" value="search"> </div>

then after pressing "search" button ajax sends request retrieve results, how can handle dynamic query? example - if user presses "search" query like:

mysqli_query($dbconnect,"select * accounts");

for example - if user specifys $_post["name"] value, query like:

mysqli_query($dbconnect,"select * accounts name='".$_post["name"]."'");

problem - how can efficiently handle kind of query? dumb check values "isset" , make tons of query cases. hope understood problem , can out it, because it`s kinda hard explain it.

maybe you're looking :

if(empty($_post['name'])) {     $name = null; } else $name = $_post['name'];

then in statement, condition :

where (name=:name or :name null)

if name isset, search name, else return true , query not affected


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