การหาคา MIN MAX ของ ข้อมูล คือว่าจะหาค่า MIN และค่า MAX ในคะแนนของผู้เข้าสอบแต่ละคน ตามในรูปเลยค่ะ

$maxx=max($sum_score_);

<?php echo max(array($id_arr)); ?>

<table width="89%" border="1" align="center" cellspacing="0" bordercolor="#999999">
    <tr>
      <td colspan="7"><div align="center">&#3605;&#3635;&#3649;&#3627;&#3609;&#3656;&#3591;..........<?php $id_posit =
        $_REQUEST[id_posit];

        $sqlC = "select  name_position,dept_position   From p_position     where id_position  ='$id_posit'";
        $resultC = mysql_query($sqlC);
        while ($rowC = mysql_fetch_array($resultC, MYSQL_ASSOC)) {
            $name_position = $rowC[name_position];
            $dept_position = $rowC[dept_position];
            echo "<b>" . $name_position . "</b>";
        }


?>..............&#3649;&#3612;&#3609;&#3585;........<?php echo "<b>" . $dept_position .
        "</b>"; ?>.........</div></td>
    </tr>
    
        
    <tr>
    

      <td>&nbsp;</td>
      	<?php
        for ($item = 0; $item < count($ITEM_RWS_commit); $item++) {
            $ITEM_RW_commit = $ITEM_RWS_commit[$item];
?>
      <td><div align="center"><?php echo $ITEM_RW_commit->id_commit;
	  
	   ?></div></td>
	  
       <?php } ?>
       <td>&nbsp;</td>
    </tr>
  

    <?php
    
        for ($item = 0; $item < count($ITEM_RWS); $item++) {
            $ITEM_RW = $ITEM_RWS[$item];
?>
    <tr>
      <td><?php $id_candy = $ITEM_RW->id_can;
            //$id_can . "." . "&nbsp;";
            $sqlCan = "select  name_can  From p_candidate      where id_can  ='$id_candy'";
            $resultCan = mysql_query($sqlCan);
            while ($rowCan = mysql_fetch_array($resultCan, MYSQL_ASSOC)) {
                $name_can = $rowCan[name_can];
                $id_can = $rowCan[id_can];

                echo $name_can;
            }

?> </td>

	<?php
	$count_commit=0;
	$sumscore=0;
	$xx=0;

	$id_array="";
	$score="";
	//$id_arr="";

        for ($item1 = 0; $item1 < count($ITEM_RWS_commit); $item1++) {
            $ITEM_RW_commit1 = $ITEM_RWS_commit[$item1];
?>

      <td><div align="center">&nbsp;<?php 
      
      $id_commit= $ITEM_RW_commit1->id_commit;
	   $sqlC = "select `id_score` , SUM( `factor_first_meet_score`+`factor_attitude_score`+`factor_experiense_score`+`factor_idia_score`+`factor_leader_score`+`factor_health_score`+`factor_talent_score`+`factor_hobby_score`+`factor_family_score`+`factor_friendly_score` ) AS sum_score From p_score_farm  where id_can  ='$id_candy' AND id_commit= '$id_commit' AND sts = 0  GROUP BY `id_score` ";
            $resultC = mysql_query($sqlC);
             while ($rowC = mysql_fetch_array($resultC, MYSQL_ASSOC)) {
                    $sum_score_ = $rowC[sum_score];


                    echo $sum_score_;
                   $sumscore+=$sum_score_; 
                    $count_commit+1;
                   $xx+=$count_commit+1;
                     $id_array .=$sum_score_.",";
                     $id_arr=array($sum_score_);
                     
                    
                
            /*$minn=min($arr);
                   $maxx=max($arr);*/


                   
                    }
                   
	   
	   ?></div>
	   
	   <?php } 
	    
               
           
	   ?>
	   
	   </td>
	 
	    <td><div align="center">&nbsp;<?php echo $sumscore/$xx; ?> <?php
	   $id_arr	= explode(',',$id_array);  
	   //$maxxim=max(array($id_arr));
	   /*for($j=0;$j<count($id_arr);$j++)
	   {
	  /* 	$evaltext="\$id_arr[$j]=\"$id_arr[$j]\"; ";
	echo   	eval($evaltext);*/
	   //print_r($id_arr[$j]);
	   
	   	
	   
	   
	  // echo max(array(2,4,5));
                    
	    ?><?php echo max(array($id_arr)); ?>
		
		</div></td>
		 

		  
    </tr>
   
    
    <?php } ?>
     
    
     <tr>
        
        
		<td ><div align="left"><a href="javascript:history.back(1)">Back</a></div></td></tr>
   
  </table>