php - Multiple forms on same page - If empty -

i'm in process of coding mysql search page , i'm unable work out how make if there's no data put in 1 form it'll nothing, , if there's data in other form it'll search database value.

<?php  echo '<h3 class="hp-1">kick logs</h3><div class="wrapper"> <div class="logcol-1"><form name="form1" id="mainform" method="post"enctype="multipart/form-data" action="' . $_server['request_uri'] . '"> <input name="name" type="text" id="name" placeholder="players name">  </form>'; echo '<form name="form2" id="mainform" method="post"enctype="multipart/form-data" action="' . $_server['request_uri'] . '"><input name="reason" type="text" id="reason" placeholder="kick reason"></form>'; $name = mysql_real_escape_string($name); $reason = mysql_real_escape_string($reason);  $kicklogname = mysql_query("select * `log1` `user` '%$name%'") or die(mysql_error()); $kicklogreason = mysql_query("select * `log1` `user` '%$reason%'") or die(mysql_error()); if($name == ""){ echo "you must enter name search"; } else {     echo '<table width="700" border="0">         <tr class="listheader">         <td width="100" bgcolor="#afe6ff">username</td>         <td width="220" bgcolor="#afe6ff">reason</td>     </tr>';     while($row = mysql_fetch_array($kicklogname))     {         echo '<tr><td bgcolor="#daf4ff" class="contentleft">';         echo $row['user'];         echo '</td><td bgcolor="#eefaff" class="contentright">';         echo $row['reason'];         echo '</td></tr>';     }     echo '</table></div></div>'; } ?> 

update

sorry, re-read question. check multiple forms on same page need add submit button each form , give name:

<?php if (!empty($_post) && isset($_post['reasonsubmit'])) {     echo 'submitted reason form'; } if (!empty($_post) && isset($_post['namesubmit'])) {     echo 'submitted name form'; } ?>  <form action="reason.php" method="post">     <input type="text" name="reason" id="reason" />     <input type="submit" name="reasonsubmit" /> </form> <form action="name.php" method="post">     <input type="text" name="name" id="name" />     <input type="submit" name="namesubmit" /> </form> 

alternatively, if didn't want give submit button name can add hidden field each form , same behavior.

<form action="reason.php" method="post">     <input type="hidden" name="reasonsubmit" id="reasonsubmit" />     <input type="text" name="reason" id="reason" />     <input type="submit" /> </form> <form action="name.php" method="post">     <input type="hidden" name="namesubmit" id="namesubmit" />     <input type="text" name="name" id="name" />     <input type="submit" /> </form>