ถามเรื่อง ให้ลบ ข้อมูลใน textbox ตอน Validate User ช้ำใน database เสร็จ

<?php
require_once("../../inc/session.php");
require_once("../../inc/config.php");
require_once("../../inc/connect.php");
require_once("../../inc/function01.php");
?>
<?php	
	$strclient = trim($_POST["client"]);
	//$strsecret = trim($_POST["txsecret"]);
		if(trim($strclient) == "")
		{
	echo  " <img src='../../images/icon/close.png'><br>";
	echo"<font color=red>**Plase input data</font>";
	exit();
	}

//*** Check Username (already exists) ***//
	$strSQL = "SELECT * FROM client  WHERE nme_client = '".$strclient."' ";
	$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
	$objResult = mysql_fetch_array($objQuery);
	if($objResult)
	{
		echo "<img src='../../images/icon/close.png'><br>";
		echo"<font color=red>** This Clients Ready..</font>";
	
	
	}
	else
	{
		echo "<img src='../../images/icon/check.png'>";
	}

	mysql_close($conn);
?>