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POhow to select different rows from mysql and update them in a single page
 

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    <p>I want to select some rows from sql database . first user should insert two variable that I can select this rows . then in this page there is table that will update this rows but the problem is when I choose this columns without inputs I'm able to update the database but when I want to use input variables it shows the table but it cannot update it . where did I make a mistake ? </p> <p>selecting databse columns without using inputs :</p> <pre><code>&lt;?php include 'mytool.php'; // username and password sent from form $myusername=$_SESSION["mys"]; $host="localhost"; // Host name $username='username'; // Mysql username $password='password'; // Mysql password $db_name="db"; // Database name $tbl_name="test"; // Table name // Connect to server and select database. $link=mysql_connect($host,$username,$password)or die("cannot connect"); $selected=mysql_select_db($db_name,$link)or die("cannot select DB"); $sql="SELECT * FROM $tbl_name where classnum='106' and level='i4' "; $result=mysql_query($sql,$link); $count=mysql_num_rows($result); ?&gt; </code></pre> <p>input variables : </p> <pre><code>&lt;form id="searchform" method="post" dir="rtl" action=""&gt; level :&lt;input name="level" type="text" id="level" /&gt; classnumber :&lt;input name="classnum" type="text" id="classnum" /&gt; &lt;input style="margin-top:10px; margin-left:120px; font-size: 14px; padding: 5px 14px;" type="submit" value="search" name="enter" /&gt; &lt;/form&gt; &lt;?php if(isset($_POST['enter'])){ $sql="SELECT * FROM $tbl_name where classnum='106' and level='i4' "; $result=mysql_query($sql,$link); $count=mysql_num_rows($result); } ?&gt; </code></pre> <p>update table code after code above :</p> <pre><code> &lt;form name="form1" action="" method="POST"&gt; &lt;center&gt; &lt;div&gt; &lt;div align="center" width = 615&gt; &lt;table class="stats" cellspacing="0" width="615" border="1"&gt; &lt;tr&gt; &lt;th width="20" scope="col" &gt;Id&lt;/th&gt; &lt;th width="60" scope="col"&gt;Name&lt;/th&gt; &lt;th width="60" scope="col"&gt;Last Name&lt;/th&gt; &lt;th width="42" scope="col"&gt;Midterm&lt;/th&gt; &lt;th width="54" scope="col"&gt;Class mark&lt;/th&gt; &lt;th width="42" scope="col"&gt;Final Quiz&lt;/th&gt; &lt;th width="54" scope="col"&gt;State&lt;/th&gt; &lt;th width="54" scope="col"&gt;Details&lt;/th&gt; &lt;/tr&gt; &lt;?php while($rows=mysql_fetch_array($result)){ $id[]=$rows['id']; ?&gt; &lt;tr&gt; &lt;td align="center"&gt; &lt;input name="id[]" type="text" id="id" value="&lt;? echo $rows['id']; ?&gt;" &gt; &lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="name[]" id="name" value= "&lt;? echo $rows['name']; ?&gt;" /&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="lastname[]" id="lastname" value= "&lt;? echo $rows['lastname']; ?&gt;" /&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="midmark[]" id="midmark" /&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="classmark[]" id="classmark" /&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="finalmark[]" id="finalmark" /&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="state[]" id="state" /&gt;&lt;/td&gt; &lt;td align="center"&gt;&lt;input type="text" name="details[]" id="details" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;?php } ?&gt; &lt;/table&gt; &lt;/div&gt; &lt;input type="submit" value="ثبت" name="Submit" /&gt; &lt;/form&gt; &lt;?php // Check if button name "Submit" is active, do this if(isset($_POST['Submit'])) { for($i=0;$i&lt;$count;$i++) { $sql1=mysql_query(" UPDATE `".$tbl_name."` SET midmark='".$_REQUEST['midmark'][$i]."' , classmark='".$_REQUEST['classmark'][$i]."' , finalmark='".$_REQUEST['finalmark'][$i]."' , state='".$_REQUEST['state'][$i]."' , details='".$_REQUEST['details'][$i]."' WHERE id='".$_REQUEST['id'][$i]."' "); $result1=mysql_query($sql1); } } if($result1){ header("location:results.php"); } mysql_close(); ?&gt; </code></pre>
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