因此，就像我一直说的那样，我是编码的新手，所以我试图以我所拥有的非常少的专门知识来做。
我的目标是：如果有人选择了喜欢的歌曲，那么我将通过电子邮件将$ fav_song值发送给我自己，并通过确认发送给客户。如果他们没有选择歌曲，那么我不会将任何此类信息发送给我自己或客户。
这是我的联系表格：
<!--Contact form below-->
<form action="../php/form_script.php" method="POST">
<table width="450px">
<tr><!-- Name -->
<td style="vertical-align: top">
<label for="name">Name *</label>
</td>
</tr>
<tr><!-- Name Textbox -->
<td style="vertical-align: top">
<input type="text" name="name" maxlength="50" size="30">
<!--"size" = how many characters long you want it to be-->
<!--"maxlength" = maximum number of characters it will accept-->
</td>
</tr>
<tr><!-- Client Email -->
<td style="vertical-align: top">
<label for="clientEmail">Email Address *</label>
</td>
</tr>
<tr><!-- Client Email Textbox -->
<td style="vertical-align: top">
<input type="text" name="clientEmail" maxlength="80" size="30">
</td>
</tr>
<tr><!-- Subject -->
<td style="vertical-align: top">
<label for="subject">Subject *</label>
</td>
</tr>
<tr><!-- Subject Textbox -->
<td style="vertical-align: top">
<input type="text" name="subject" maxlength="30" size="30">
</td>
</tr>
<tr><!-- Favorite Song -->
<td style="vertical-align:top">
<label for="fav_song">Favorite Song:</label>
</td>
</tr>
<tr><!-- Favorite Song Select -->
<td style="vertical-align:top">
<select name="fav_song">
<option value="none">Choose a Song Below</option>
<option value="far-sighted">Far-Sighted</option>
<option value="off_the_grid">Off the Grid</option>
<option value="nasty_rude">Nasty Rude</option>
<option value="inner_peace">Inner Peace</option>
<option value="frozen_bones">Frozen Bones</option>
<option value="stubborn_heart">Stubborn Heart</option>
<option value="dont_be_afraid">Don't Be Afraid</option>
<option value="made_you_smile">Made You Smile</option>
<option value="godly_palaver">Godly Palaver</option>
<option value="catch_you_on_the_flip_side">Catch You on the Flip Side</option>
<option value="we_remain">We Remain</option>
<option value="bluesless">Bluesless</option>
</select>
</td>
</tr>
<tr><!-- Client Message -->
<td style="vertical-align:top">
<label for="clientMessage">Message *</label>
</td>
</tr>
<tr><!-- Client Message Textarea -->
<td style="vertical-align: top">
<textarea name="clientMessage" maxlength=""></textarea>
</td>
</tr>
<tr>
<td style="vertical-align: top">
<input type="submit" name="submit" value="Submit">
<!--"value" is what you see written on the submit button in the browser-->
</td>
</tr>
</table>
</form>
<!--End Contact Form-->
这是我的php脚本，应该执行我在上面编写的内容：
<?php
$email = "[email protected]";
$name = $_POST['name'];
$clientEmail = $_POST['clientEmail'];
$subject = $_POST['subject'];
$fav_song = $_POST['fav_song'];
$clientMessage = $_POST['clientMessage'];
//if the client doesn't pick a song, I won't receive a $fav_song value in my inbox:
if ($fav_song === "none") {
$message = "Name: " . $name . ", Email: " . $clientEmail . ", Message: " . $clientMessage;
}
//if the client does pick a song, I will receive a $fav_song value in my inbox
if ($fav_song !== "none") {
$message = "Name: " . $name . ", Email: " . $clientEmail . ", Favorite Song: " . $fav_song . ", Message: " . $clientMessage;
}
/*********** Email Script ***********/
mail($email, $subject, $message, "Name: " . $name . "From: " . $clientEmail . "Favorite Song: " . $fav_song);
//if the client doesn't pick a song, I won't confirm a $fav_song value for them
if ($fav_song === "none") {
echo "Your email has been sent: </br>Name: $name</br>Email: $clientEmail</br>Subject: $subject</br>Message: $clientMessage";
}
//if the client does pick a song, I will confirm a $fav_song value for them
if ($fav_song !== "none")
{"Your email has been sent: </br>Name: $name</br>Email: $clientEmail</br>Subject: $subject</br>Song: $fav_song</br>Message: $clientMessage";
}
?>
我也尝试过if / else。但是，在两种情况下，如果都未选择歌曲，则一切正常。但是，选择一首歌曲后，客户的确认为空白（当它应该显示“您的电子邮件已发送...”字符串时）。此外，当选择了一首歌曲（任何一首歌曲），它会告诉我选择（即使它不是），其富有远见的。
那么，我该如何解决呢？无论如何，有没有简化这个烂摊子？
谢谢！
在最后一段代码中，您没有添加echo。试试这个：
if ($fav_song != "none") {
echo "Your email has been sent: </br>Name: $name</br>Email: $clientEmail</br>Subject: $subject</br>Song: $fav_song</br>Message: $clientMessage";
}
另外，为了简化使用if/ else：
if ($fav_song === "none") {
echo "Your email has been sent: </br>Name: $name</br>Email: $clientEmail</br>Subject: $subject</br>Message: $clientMessage";
} else {
echo "Your email has been sent: </br>Name: $name</br>Email: $clientEmail</br>Subject: $subject</br>Song: $fav_song</br>Message: $clientMessage";
}
如果条件相反（与相同$fav_song !== "none"），否则Else将执行其中的代码。
为了简化更多操作，您可以执行以下操作：
// This will be always being echoed.
echo "Your email has been sent: </br>Name: $name</br>Email: $clientEmail</br>Subject: $subject</br>";
// Then if the user has selected a song, it will be echoed.
if ($fav_song != "none") {
echo "Song: $fav_song</br>";
}
// And then will echo the rest of the string.
echo "Message: $clientMessage";
不必担心会在不同的行中破坏回声，它会以完全相同的方式工作，就像将它们串联在一起一样。
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