ช่วยดูโค๊ดให้หน่อยครับ และช่วยเพิ่มให้หน่อยนะครับผม

 <form id="form1" name="form1" method="post" action="">
         <table width="950" border="0" align="center" cellpadding="0" cellspacing="0" bgcolor="#D3D3D3">
        <tr>
          <td height="25" scope="col" align="right" class="style14">&nbsp;</td>
          <td height="25" scope="col">&nbsp;</td>
        </tr>
        <tr>
          <td width="23%" height="25" scope="col" align="right" class="style14"><span class="style11">*</span>&nbsp;หัวข้อ :&nbsp;</td>
          <td width="77%" height="25" scope="col"><input name="title" type="text" size="80" maxlength="500" title="ตั้งชื่อหัวข้อของท่าน เช่น ขอสอบถามราคา" /></td>
        </tr>
        <tr>
          <td width="23%" height="25" scope="col" align="right" class="style14"><span class="style11">*</span>&nbsp;จากคุณ :&nbsp;</td>
          <td width="77%" height="25" scope="col"><input name="name" type="text" size="40" maxlength="100" title="กรอกชื่อคุณ"  />
            <input name="date" type="hidden"  value="<? echo thai_date($eng_date);?>" size="20"  /></td>
        </tr>
        <tr>
          <td width="23%" height="25" scope="col" align="right" class="style14"><span class="style11">*</span>&nbsp;Email :&nbsp;</td>
          <td width="77%" height="25" scope="col">
          <input name="email" type="text" size="40" maxlength="50"  title="ที่อยู่อีเมล์เพื่อติดต่อกลับ เช่น [email protected]" />&nbsp;<span class="style11">ข้อมูลนี้จะไม่ถูกเผยแพร่</span>
            <input name="time" type="hidden"  value="<? echo thai_time($eng_time);?>" size="20"  /></td>
        </tr>
        <tr>
          <td width="23%" height="25" scope="col" align="right" class="style14"><span class="style11">*</span>&nbsp;เบอร์ติดต่อกลับ :&nbsp;</td>
          <td width="77%" height="25" scope="col"><input name="phone" type="text" size="40" maxlength="15"  title="เบอร์โทรศัทพ์ของคุณ เช่น 0811234567" />&nbsp;<span class="style11">ข้อมูลนี้จะไม่ถูกเผยแพร่</span></td>
        </tr>
        <tr>
          <td width="23%" height="25" align="right" valign="top" class="style14" scope="col"><span class="style11">*</span>&nbsp;ข้อความ :&nbsp;</td>
          <td width="77%" height="25" scope="col"><textarea name="text" class="ckeditor" cols="80" rows="10" title="กรอกข้อมูลเพื่อสอบถาม"></textarea></td>
        </tr>
        <tr>
          <td width="23%" height="40" scope="col" align="right" class="style14">&nbsp;</td>
          <td width="77%" height="40" scope="col"><img src="../pic_text.php?str=<?=$ran_str?>"></td>
        </tr>
        <tr>
          <td width="23%" height="25" scope="col" align="right" class="style14">รหัสภาพ :&nbsp;</td>
          <td width="77%" height="25" scope="col"><input name="code_input" type="text" class="style10" size="15" maxlength="6"  title="กรุณาใส่รหัสภาพให้ถูกต้องด้วยค่ะ" /><span class="style11" >&nbsp;*กรุณากรอกรหัสให้ตรงกับภาพด้านบน</span><input type="hidden" name="code_hidden" value="<?=$ran_str?>"></td>
        </tr>
        <tr>
          <td width="23%" height="25" scope="col" align="right" class="style14">&nbsp;</td>
          <td width="77%" height="25" scope="col">&nbsp;</td>
        </tr>
        <tr>
          <td height="25" scope="col" align="right" class="style14">&nbsp;</td>
          <td height="25" scope="col"><a href="#" onclick="history.back();"><img src="../../../Them/back2.gif" border="0" /></a>&nbsp;
            <input name="submit" type="image" src="../../../Them/send2.gif"  border="0"/></td>
        </tr>
        <tr>
          <td height="25" scope="col" align="right" class="style14">&nbsp;</td>
          <td height="25" scope="col">&nbsp;</td>
        </tr>
        <tr>
          <td width="23%" height="25" scope="col" align="right" class="style14">&nbsp;</td>
          <td width="77%" height="25" scope="col">&nbsp;</td>
        </tr>
      </table>
    </form>

<?php

	// 
	function random_char($ren)
	{
			$chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".
						"abcdefghijklmnopqrstuvwxyz".
						"0123456789";
			$ret_char = " ";
			$num = strlen($chars); $i  = 0;
			for($i = 0; $i < $ren; $i++)	
			{
				$ret_char.= $chars[rand()%$num];
				$ret_char.=""; 
			}
			return $ret_char; 
	}
	// echo random_char(10);	

	if($_POST){
	
		$_get_name = isset($_POST['_set_name']) ? htmlspecialchars($_POST['_set_name']) : ' ' ;
		$_get_pwd = isset($_POST['_set_pwd']) ? htmlspecialchars($_POST['_set_pwd']) : ' ' ;

		// random
		$_get_token = random_char(10);
	}
?>
<?php if($_POST) { ?>
<div id = "_get_contents">
		name : <?=  $_get_name ?><br>
		password : <?=  $_get_pwd ?><br>
		token : <b><?= $_get_token ?></b>
</div>
<hr>
<?php } ?>
<div id = " _set_contents">
	<form action="" method="post">
			name : <input type="text" name="_set_name" value="name"><br>
			password : <input type="text" name="_set_pwd" value="password"><br>
			<!-- <input type="text" name="_set_pass" value=""><br> -->
			<input type="submit" name="_sb" value="ok">
	</form>
</div>