php - Trying to create a search facility but having issues -

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i having issues php code, been trying create search facility , having errors , don't know do. here's code area having issues:

<input type="text"  required="required" name="name">  <input name="submit" name="submit" value="search"> </form>  <?php if(isset($_post['submit'])) { if(isset($_get['go'])){ if(preg_match("^/[a-za-z]+/", $_post['name'])){   //to make sure either capital or small letters     $name=$_post['name'];  //connection database $db=mysql_connect ("localhost", "<u1375454>", "<25jun94>") or die ('cannot connect database: ' .mysql_error());  //selection of database use $mydb=mysql_select_db("cars");   $sql="select brand i_d, brand_name, headquarters, net_worth cars brand_name '%" . $name . '%" or headquarters '%" . $name ."%'";       $result=mysql_query($sql);  // heres having problem while($row=mysql_fetch_array($result)){    $brand_name=$row['brand_name'];    $headquarters=$row['headquarters'];    $brand i_d=$row['brand i_d'];    echo "<ul>\n";    echo "<li>" . "<a  href=\"search.php?id=$id\">"   .$brand_name . " " . $headquarters .  "</a>     </li>\n";    echo "</ul>";  }

your variable "$brand i_d" cannot that! change $brand_i_d;


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