mysql - PHP - dropdown populates but will not select using 2 tables -


i've been working on @ least month, , can't find question elsewhere. know i'm missing stupid, but...

there 2 tables: biz , bizclass. bizclass.bizclassname holds 250+ classifications populate dropdown box. population bizclass table , update biz table both work, when try select current data biz.bizclass1 , dropdown initial value set null value "select class". please help. it's driving me bonkers. i'm old many more sleepless nights! newbie - familiar php , javascript don't have grip on ajax yet. 

echo "class1: <select name ='bizclass1' id='bizclass1'/> ";  $sql = 'select bizclassname bizclass order bizclassname'; $query2 = 'select `bizclass1` `biz` `bizid` = "'. $search .'"';  $clist = mysqli_query($connection,$sql);  $num=mysqli_num_rows($clist); $olist = mysqli_query($connection, $query2); // select  bizclass biz   $biztblrecord = mysqli_fetch_assoc($clist); // option values bizclass table populate dropdown $row2 = mysqli_fetch_assoc($olist); // fetched bizclass biz  if ($row2['bizclass1'] == $biztblrecord['bizclassname']){     printf ("<option value='%s' selected >%s</option> ", $row2['bizclass1'], $row2['bizclass1']); } else {     printf ("<option value=''>select class</option> "); }//end if   for($numrows=1; $numrows<= $num; $numrows++) {     // associative array     $row=mysqli_fetch_assoc($clist);      printf ("<option value='%s'>%s</option>",$row['bizclassname'],$row['bizclassname']);  } //end  echo "</select>";  // free result set mysqli_free_result($clist);  mysqli_free_result($olist); 

    echo "class1: <select name ='bizclass1' id='bizclass1'/>                          <option value=''>select class</option> ";      $sql = 'select bizclassname bizclass order bizclassname';     $clist = mysqli_query($connection,$sql);      $num=mysqli_num_rows($clist);        $querysearch = 'select `bizclass1` `biz` `bizid` = "'. $search .'"';      $searchlist = mysqli_query($connection, $querysearch); // select  bizclass biz      $rowsearch= mysqli_fetch_assoc($searchlist); // fetched bizclass biz      for($numrows=1; $numrows<= $num; $numrows++)     {         // associative array         $row=mysqli_fetch_assoc($clist);          if ($rowsearch['bizclass1'] == $row['bizclassname']){             printf ("<option value='%s' selected >%s</option> ", $rowsearch['bizclass1'], $rowsearch['bizclass1']);         } else {             printf ("<option value='%s'>%s</option>",$row['bizclassname'],$row['bizclassname']);         }//end if      } //end      echo "</select>";      // free result set     mysqli_free_result($clist);      mysqli_free_result($searchlist);

if statement have inside loop compare each option search.

test tables:

biz

bizid   bizclass1 1       ronaldo 2       shevshenko 3       falcao 4       zidane 5       valderrama

bizclass

bizclassname falcao ozil ronaldo messi shevshenko valderrama hazard totti

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