message_insert.php

<meta charset='utf-8'>
<?php
    $send_id = $_GET["send_id"];

    $rv_id = $_POST['rv_id'];
    $subject = $_POST['subject'];
    $content = $_POST['content'];
	$subject = htmlspecialchars($subject, ENT_QUOTES);
	$content = htmlspecialchars($content, ENT_QUOTES);
	$regist_day = date("Y-m-d (H:i)"); 

	if(!$send_id) {
		echo("
			<script>
			alert('로그인 후 이용해 주세요! ');
			history.go(-1)
			</script>
			");
		exit;
	}

	$con = mysqli_connect("localhost", "Steve", "Vrick2956!@", "Term");
	$sql = "select * from members where id='$rv_id'";
	$result = mysqli_query($con, $sql);
	$num_record = mysqli_num_rows($result);

	if($num_record)
	{
		$sql = "insert into message (send_id, rv_id, subject, content,  regist_day) ";
		$sql .= "values('$send_id', '$rv_id', '$subject', '$content', '$regist_day')";
		mysqli_query($con, $sql);  
		echo("
			<script>
			alert('수신 아이디가 잘못 되었습니다!');
			history.go(-1)
			</script>
			");
		exit;
	}

	mysqli_close($con);              

	echo "
	   <script>
	    location.href = 'message_box.php?mode=send';
	   </script>
	";
?>