驗證電子郵件錯誤

<?php 
if (isset($_POST['ign'], $_POST['email'])) { 
    if($_POST['ign'] && $_POST['email']){ 

    } 
    else { 
     echo ("Please enter all of the values!"); 
    } 
} 
else { 
    echo ("Error in form data!"); 
} 
if((FILTER_VALIDATE_EMAIL($_POST['email'] == TRUE))) { 
    $email = $_POST['email']; 
    echo ("Thanks, " . htmlentities($_POST['ign']) . ", you will recieve an email when the site is complete!"); 
} 
else { 
    echo "Failure!"; 
} 

// insert email and ign into database 
?>

這會正常工作嗎？第一次完全從頭開始做一些事情！驗證電子郵件錯誤

行！我改變了它。那這個呢？我還應該做空嗎？

<?php 
if (!isset($_POST['ign'], $_POST['email'])) { 
    if($_POST['ign'] && $_POST['email']){ 
    echo "Please fill out all of the fields!"; 
     die; 
} 
if(var_filter($_POST['email'], FILTER_VALIDATE_EMAIL)) 
    $email = $_POST['email']; 
    echo ("Thanks, " . htmlentities($_POST['ign']) . ", you will recieve an email when the site is complete!"); 
} 
else { 
    echo "Your email was invalid!"; 
} 

// insert email and ign into database 
?>

來源

2012-01-10 Depetrify

+1用於查看第一次嘗試驗證的過濾器函數！ – cmbuckley 2012-01-10 00:49:42

不，它不會起作用。但在你問它是否確實如此之前，你應該執行代碼並嘗試修復它返回的錯誤。瞭解錯誤並修復它們會大大幫助您未來的編程。 – fivedigit 2012-01-10 00:49:58

[if！isset multiple OR conditions]的可能重複（http://stackoverflow.com/questions/8784584/if-isset-multiple-or-conditions） – 2012-01-10 00:54:07

使用內置的功能，不要重新發明輪子：

if(filter_var($mail, FILTER_VALIDATE_EMAIL)){ 
    echo "Mail is valid!"; 
}

爲什麼你的函數名全部大寫？

...和你看到這之間的區別...

if(func($_POST['email'] == TRUE)){

這..

if(func($_POST['email']) == TRUE){

？

來源

2012-01-10 00:47:50

**今晚可能還會有20個以上的問題**警告單詞**：這將驗證諸如'foo @ example'（無TLD）之類的內容，因爲它是有效的（儘管是本地）電子郵件地址。看看結合[chkdnsrr]（http://php.net/manual/en/function.checkdnsrr.php）來驗證地址的域部分。 – cmbuckley 2012-01-10 00:53:31

不，大聲笑。我也認爲FILTER_VALIDATE_EMAIL是它的功能...我沒有使用filter_var。 – Depetrify 2012-01-10 00:55:02

@ user1138090：查看括號的順序。他們有微妙的不同。 – cmbuckley 2012-01-10 01:02:53

那裏有很多錯誤。以下是您應該做的事情：

// First check if both fields are present. Usually there is no point in doing this 
// because the next check will also catch this case, but you had it so I put it in too. 
if (!isset($_POST['ign'], $_POST['email'])) { 
    echo ("Error in form data!"); 
    die; // or something else 
} 

// Then check if both values are non-"empty" (you might want to look at the docs for 
// an explanation of what this means exactly). 
if (empty($_POST['ign']) || empty($_POST['email'])) { 
    echo ("Please enter all of the values!"); 
    die; // or something else 
} 

// Finally, validate the email. DO NOT COMPARE WITH true! 
if (!filter_var($_POST['email'], FILTER_VALIDATE_EMAIL)) { 
    echo "Failure!"; 
    die; // etc 
} 

echo ("Thanks, " . htmlentities($_POST['ign']) . ", blah blah!");

來源

2012-01-10 00:51:23 Jon

OP的初始isset（）調用完全有效。看起來這個學生已經教了關於isset（）函數簽名的主人（http://php.net/manual/en/function.isset.php）：-D – cmbuckley 2012-01-10 00:57:05

@cbuckley：糟糕。那麼，你每天都會學到一些東西！編輯答案，以免聽起來很愚蠢。 ;-) – Jon 2012-01-10 01:02:16

驗證電子郵件錯誤

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