（《Head First PHP & MySQL》學習記錄）
php代碼：
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Send Email</title>
</head>
<body>
<h1>Send email to subscribers</h1>
<p>Maystudio's administrators only!</p>
<?php
$dbc=mysqli_connect('127.0.0.1','root','12345678','maystudio') or die('Error connecting MySQL server.');
$query="SELECT * FROM email_list";
$result=mysqli_query($dbc,$query) or die('Error querying database.');
$subject=$_POST['subject'];
$body=$_POST['body'];
$from='[email protected]';
$output_form=false;
/*如果按下提交按鈕*/
if(isset($_POST['submit'])){
/*如果主題或內容項爲空，提示並顯示錶*/
if(empty($subject)||empty($body)){
echo "You haven't complete the form yet...<br />";
$output_form=true;
}
/*如果收件人項爲空，提示並顯示錶*/
if(empty($_POST['to'])){
echo "You haven't select receivers...<br />";
$output_form=true;
}
/*都不爲空，發送郵件*/
else{
echo "Email sent to: <br />";
foreach($_POST['to'] as $toid){
$query="SELECT * FROM email_list WHERE id = $toid";
$result=mysqli_query($dbc,$query) or die('Error querying database.');
$subscriber=mysqli_fetch_array($result);
$firstname=$subscriber['first_name'];
$lastname=$subscriber['last_name'];
$to=$subscriber['email'];
$msg="Dear $firstname $lastname, \n $body";
mail($to,$subject,$msg,'From: '.$from);
echo $firstname.' '.$lastname.' '.$to.'<br />';
}
/**/
echo '<a href="send-email.php">Back</a>';
}
}
/*如果沒有按下提交按鈕，顯示錶*/
else{
$output_form=true;
}
/*顯示錶*/
if($output_form){
?>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
<label for="to">To: </label><br />
<?php
/*循環輸出收件人選項*/
while($row=mysqli_fetch_array($result)){
echo '<input type="checkbox" value="'.$row['id'].'" name="to[]" />';
echo $row['first_name'];
echo ' '.$row['last_name'];
echo ' '.$row['email'].'<br />';
}
?>
<label for="subject">Subject: </label><br />
<input type="text" id="subject" name="subject" value="<?php echo $subject; ?>" /><br /> <!--信息填寫錯誤時仍在表格中留有填寫的數據-->
<label for="body">Body: </label><br />
<textarea id="body" name="body" rows="8" cols="60"><?php echo $body; ?></textarea><br /><!--同上-->
<input type="submit" name="submit" value="Send" />
</form>
<?php
}
?>
</body>
</html>