如何在這個PHP文件中添加一個簡單的IF語句？

Question

新手問題，在這裏：

我有一個簡單的表單，返回一個人的姓名，公司和地址等等。

現在，它們分別返回。如果「公司」字段中沒有條目，則發送的電子郵件中有空白行。

我想編一個IF語句，這樣如果「公司」字段中沒有條目，該「地址」將在沒有額外空間的情況下在「名稱」之後返回，但將包括「公司「信息，如果該字段是填充。

PHP代碼的相關部分看起來是這樣的：

$name = $_POST['name']; 
$company = $_POST['company']; 
$address = $_POST['address']; 
$city = $_POST['city']; 
$state = $_POST['state']; 
$zip = $_POST['zip']; 
$email = $_POST['email']; 
$optin = $_POST['optin']; 
$comments = ($_POST['comments']); 



$body = <<<EOD 

Please send samples to: 

$name 
$company 
$address 
$city, $state $zip 

Email: $email 

Opt-In to occasional email list?: $optin 

Comments: $comments 

EOD; 
$headers = "From: $email\r\n"; 
$success = mail($webMaster, $emailSubject, $body, 
$headers); 

，我將非常感謝您的幫助！

Answer 1

我編輯此使用的\n代替<br />

$optin = $_POST['optin']; 
$comments = ($_POST['comments']); 



$body = "Please send samples to:"; 
if($_POST['name'] != '') $body .= "\n".$_POST['name']; 
if($_POST['company'] != '') $body .= "\n".$_POST['company']; 
if($_POST['address'] != '') $body .= "\n".$_POST['address']; 
if($_POST['city'] != '') $body .= "\n".$_POST['city']; 
if($_POST['state'] != '') $body .= ", ".$_POST['state']; 
if($_POST['zip'] != '') $body .= " ".$_POST['zip']; 
if($_POST['email'] != '') $body .= "\n\nEmail: ".$_POST['email']; 
$body .= "Opt-In to occasional email list?: $optin"; 
$body .= "\n\nComments: $comments"; 


$headers = "From: $email\r\n"; 
$success = mail($webMaster, $emailSubject, $body, 
$headers); 

Answer 2

這個

什麼？

$name = $_POST['name']; 
//... 

if(empty($company)){ 
    $nameAndCompany = $name; 
}else{ 
    $nameAndCompany = $name."\n".$company; 
} 
// or using the ternary operator, because it's a rather simple if 
$nameAndCompany = (empty($company))?$name:$name."\n".$company; 
$body = <<<EOD 
... 

$nameAndCompany 
$address 
$city, $state $zip 
... 

\ n在雙引號中表示換行符。有關ternary operator的更多信息，請參閱php.net文檔。

Answer 3

您正在PHP腳本中使用heredoc語法。你不能在那裏使用IF語句。但是你可以使用其他方法：

• 閉上你的PHP代碼，並在代碼中使用< = $ VAR>
• 使用的模板，並用了preg_replace（）代替關鍵字等
• 把所有？你的字符串到一個數組和使用破滅（「\ n」，$ ARR）來構造一個不錯的串出來的
• 串連您的字符串直接

最簡單的方法是第一個（從array_filter EDITED另一個答案）：

$name = $_POST['name']; 
$company = $_POST['company']; 
$address = $_POST['address']; 
$city = $_POST['city']; 
$state = $_POST['state']; 
$zip = $_POST['zip']; 
$email = $_POST['email']; 
$optin = $_POST['optin']; 
$comments = ($_POST['comments']); 



ob_start(); 
?> 
Please send samples to: 

<?= implode("\n", array_filter($name, $company, $address)) ?> 
<?= $city ?>, <?= $state ?> <?= $zip ?> 

Email: <?= $email ?> 

Opt-In to occasional email list?: <?= $optin ?> 

Comments: <?= $comments ?> 

?> 
$body = ob_get_clean(); // return the output since ob_start() 

$headers = "From: $email\r\n"; 
$success = mail($webMaster, $emailSubject, $body, $headers); 

Answer 4

你必須擺脫HEREDOC的這一點，或者是預先準備的價值，但這是好的，簡稱：

echo join("\n", array_filter(array($name, $company, $address)));