mysql - Drop-Down Menu PHP -


i have html code menu sub-menu:

<li class="has-submenu">                                 <a href="#">services</a>                                 <div class="mainmenu-submenu">                                     <div class="mainmenu-submenu-inner">                                          <div>                                             <h4>home</h4>                                             <ul>                                                 <li><a href="#">plumbers</a></li>                                                 <li><a href="#">painters</a></li>                                             </ul>                                             <h4>people</h4>                                             <ul>                                                 <li><a href="#">babysitter</a></li>                                                 <li><a href="#">trainer</a></li>                                              </ul>                                             <h4>school</h4>                                             <ul>                                                 <li><a href="#">teacher</a></li>                                              </ul>                                         </div>                                         <div>                                             <h4>machine</h4>                                             <ul>                                                 <li><a href="#">mecanic</a></li>                                             </ul>                                             </div>                                 </div>                             </div>                         </li> 

then have table called "services":

id  |    name   | service   | description        1       mario    plumber         aaa           2       luigi    plumber         aaa         3       link     painter         aaa         4       zelda    babysitter      aaa         5       sonic    trainer         aaa         6       marth    teacher         aaa         7        ike     trainer         aaa         8     little mac mecanic         aaa  

i want create code shows me results associated sub-menu. example, if press plumbers in sub-menu, want show me plumbers table. php code use is:

$query = "select * services service service";                     $result = mysql_query($query) or die(mysql_error());                     $casaarray = array(); 

but can show me services. i'm new php.

thanks help.

you can create link in menu:

<a href="information.php?action=plumber">plumbers</a> 

then, information.php. (i've used mysql_real_escape_string() function prevent sql injections)

if(!empty($_get["action"])){    $action = mysql_real_escape_string($_get["action"]);    $query = "select * services service='$action'";   $result = mysql_query($query);   while($row = mysql_fetch_array($result)){     echo $row["name"]." - ".$row["description"]."<br>";   } /* end of while loop */  } /* end of if not empty action */ 

note:

  • you must have structured database, schema have, etc. in order achieve want. can update post in order people here in you.
  • as far can see given code, user click link prefer, , redirected page contains information, in form of list or sort.
  • if don't have yet code connect database, assume want use php , mysql because of tag used in post. unfortunately, mysql deprecated , recommend use mysqli prepared statement.

to start, have menu, links redirect them page. unfortunately, again, gave 1 table contains information want show on next page.

first, let create table, call main_services , have 2 column: service_id (auto-increment , primary key) , service.

service_id  |  service     1       |  plumber     2       |  painter     3       |  babysitter     4       |  trainer     5       |  teacher     6       |  mechanic , on... 

then, let alter table structure of services table. services table still have 4 columns: id, service_id, name , description. index main_services.service_id services.serviceid

id  |   service_id |    name    |  description        1         1        mario           aaa           2         1        luigi           aaa         3         2        link            aaa         4         3        zelda           aaa         5         4        sonic           aaa         6         5        marth           aaa         7         4        ike             aaa         8         6        little mac      aaa  

after have established tables, create links on menu.

<div>   <h4>options</h4>   <ul>     <?php        $con = new mysqli("yourhost", "username", "password", "database"); /* replace necessary data */        if (mysqli_connect_errno()) {         printf("connect failed: %s\n", mysqli_connect_error());         exit();       }        if($stmt = $con->prepare("select service_id, service main_service")){         $stmt->execute();         $stmt->bind_result($serviceid,$service);         while($stmt->fetch()){           ?>             <li>               <a href="information.php?id=<?php echo $serviceid; ?>"><?php echo $service; ?></a>             </li>           <?php         }         $stmt->close();        }     ?>   </ul> </div> 

then let create information.php file:

<?php    /* let first establish connection database */   $con = new mysqli("yourhost", "username", "password", "database"); /* replace necessary data */    if (mysqli_connect_errno()) {     printf("connect failed: %s\n", mysqli_connect_error());     exit();   }    if(!empty($_get["id"])){      if($stmt = $con->prepare("select name, description services service_id = ?")){       ?>         <table>           <tr>             <th>name</th>             <th>description</th>           </tr>       <?php        $stmt->bind_param("i",$_get["id"]);       $stmt->execute();       $stmt->bind_result($name,$description);       while($stmt->fetch()){         ?>           <tr>             <td><?php echo $name; ?></td>             <td><?php echo $description; ?></td>           </tr>         <?php       } /* end of while loop */        ?>         </table>       <?php       $stmt->close();     } /* end of prepared statement */    } /* end of if not empty id */  ?> 

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