PHP發送帶附件的電子郵件表格驗證尺寸和擴展

Question

我已經制作了這段代碼，現在我的頭靠牆了。

看來代碼無法兼顧文件的大小或擴展名！

我收到文件和電子郵件。有人能解釋我爲什麼驗證失敗嗎？

<?php 
//Get the uploaded file information 
$name_of_uploaded_file = 
    basename($_FILES['uploaded_file']['name']); 

//get the file extension of the file 
$type_of_uploaded_file = 
    substr($name_of_uploaded_file, 
    strrpos($name_of_uploaded_file, '.') + 1); 

$size_of_uploaded_file = 
    $_FILES["uploaded_file"]["size"]/1024;//size in KBs 

//Settings 
$max_allowed_file_size = 2000; // size in KB 
$allowed_extensions = array("jpg", "jpeg", "gif", "bmp", "pdf"); 
$upload_folder = '../receivedfiles/'; 

//Validations 
if($size_of_uploaded_file > $max_allowed_file_size) 
{ 
    $errors .= "\n Fejl: Filen er for stor"; 
} 

//------ Validate the file extension ----- 
$allowed_ext = false; 
for($i=0; $i<sizeof($allowed_extensions); $i++) 
{ 
    if(strcasecmp($allowed_extensions[$i],$type_of_uploaded_file) == 0) 
    { 
    $allowed_ext = true; 
    } 
} 

if(!$allowed_ext) 
{ 
    $errors .= "\n The uploaded file is not supported file type. ". 
    " Send venligst filer af følgende type: ".implode(',',$allowed_extensions); 
} 

//copy the temp. uploaded file to uploads folder 
$path_of_uploaded_file = $upload_folder . $name_of_uploaded_file; 
$tmp_path = $_FILES["uploaded_file"]["tmp_name"]; 

if(is_uploaded_file($tmp_path)) 
{ 
    if(!copy($tmp_path,$path_of_uploaded_file)) 
    { 
    $errors .= '\n error while copying the uploaded file'; 
    } 
} 

$name = $_POST['name']; 
$email = $_POST['email']; 
$phone = $_POST['phone']; 
$call = $_POST['call']; 
$company = $_POST['company']; 
$type = $_POST['type']; 
$adress = $_POST['adress']; 
$hesteid = $_POST['hesteid']; 
$hestenavn = $_POST['hestenavn']; 
$message = $_POST['message']; 
$areacode = $_POST['areacode']; 
$land = $_POST['land']; 
$formcontent=" Fra: $company \n Navn: $name \n Adresse: $adress , $areacode \n Land: $land \n Telefon: $phone \n Ringes op: $call \n Type: $type \n Hoppens navn og ID: $hestenavn , $hesteid \n Besked: \n $message \n Vedhæftede filer: \n $path_of_uploaded_file"; 
$recipient = "my@email.dk"; 
$subject = "Besked fra hjemmesiden"; 
$mailheader = "Fra: $email \r\n"; 
mail($recipient, $subject, $formcontent, $mailheader) or die("Error!"); 
header('Location: /thank_you.shtml') 
?> 

HTML formcode：

<form class="contactform" action="php/mail.php" method="post" enctype="multipart/form-data"> 
<label for="company">Firma</label> 
<input type="text" name="company" id="company" /> 
<label for="name">Navn</label> 
<input type="text" name="name" placeholder="Dit navn" id="name" required="required" /><span class="red">&#42;</span> 
<br /> 
<label for="email">Email</label> 
<input type="email" name="email" placeholder="din@mail.dk" id="email" required="required" /><span class="red">&#42;</span> 
<br /> 
<label for="phone">Telefon</label> 
<input type="text" name="phone" placeholder="" id="phone" required="required" /><span class="red">&#42;</span> 
<br /> 
<label for="adress">Adresse</label> 
<input type="text" name="adress" placeholder="Din adresse" id="adress" /> 
<br /> 
<label for="areacode">Postnummer og By</label> 
<input type="text" name="areacode" placeholder="Postnummer og By" id="areacode" /> 
<br /> 
<label for="land">Land</label> 
<input type="text" name="land" placeholder="Land" id="land" /> 
<br /> 
<br /> 
<label for="call">Vil De ringes op?<span class="red">&#42;</span></label> 
<table class="callme"> 
<tr> 
<td class="callmetext"><p>Ja</p></td> 
<td class="callmecheck"><input type="radio" value="Ja" name="call" id="call" required="required" /></td> 
</tr> 
<tr> 
<td class="callmetext"><p>Nej</p></td> 
<td class="callmecheck"><input type="radio" value="Nej" name="call" /></td> 
</tr> 
</table> 
<br /> 
<label for="type">Emne</label> 
<select name="type" size="1" id="type" required="required"> 
<option value="">Vælg fra listen</option> 
<option value="Bestille dek&#230;ning">Bestille bedækning</option> 
<option value="Bestille brochure">Bestille brochure</option> 
<option value="Information om en hingst">Information om en hingst</option> 
<option value="Information om stutteriet">Information om stutteriet</option> 
<option value="Information om salgsheste">Information om salgsheste</option> 
<option value="Information om Afkomsformidling">Information om afkomsformidling</option> 
<option value="Information om samarbejdspartnere">Information om vore samarbejdspartner</option> 
<option value="Andet">Andet</option> 
</select><span class="red">&#42;</span> 
<br /> 
<label for="hesteid">Hoppens ID</label> 
<input type="text" name="hesteid" placeholder="208333DW..." id="hesteid" /> 
<br /> 
<label for="hestenavn">Hoppens navn</label> 
<input type="text" name="hestenavn" placeholder="Hoppens navn..." id="hestenavn" /> 
<br /> 
<br /> 
<label for="message">Din besked<span class="red">&#42;</span></label> 
<textarea name="message" rows="6" cols="20" placeholder="Skriv din besked her..." id="message" required="required"></textarea> 
<br /> 
<br /> 
<label for="uploaded_file">Vælg en fil:</label> 
<input type="file" name="uploaded_file"> 
<br /> 
<br /> 
<div class="center"> 
<label for="captcha">&#32;</label> 
<div id="captcha" class="g-recaptcha" data-callback="recaptchaCallback" data-sitekey="6LfnbiATAAAAAOBV8B7qaPGzfpyjdahePpyGhLjj"></div> 
</div> 
<br /> 
<br /> 
<div class="center"> 
<label for="submitBtn">&#32;</label> 
<input class="contactbtn" type="submit" value="Send besked" id="submitBtn" disabled /> 
</div> 
</form> 

獎金的問題：我將能夠複製此代碼，並改變「uploaded_file」到「uploaded_file2」，和3，等等，並能增加幾個更多文件？

Answer 1

你的代碼沒有特別的問題。我唯一注意到的是，您不是在發送電子郵件之前在任何地方初始化$error，或者檢查其內容。

而且，這個代碼整塊：

$allowed_ext = false; 
for ($i = 0; $i < sizeof($allowed_extensions); $i++) 
{ 
    if (strcasecmp($allowed_extensions[$i], $type_of_uploaded_file) == 0) 
    { 
     $allowed_ext = true; 
    } 
} 

...可以簡化爲：

$allowed_ext = in_array(strtolower($type_of_uploaded_file), $allowed_extensions); 

並回答了獎金問題：要實現多文件上傳，你可以使用您input名稱的數組：

<input type="file" name="uploaded_file[]"> 
<input type="file" name="uploaded_file[]"> 
<input type="file" name="uploaded_file[]"> 

使用print_r你可以在n找出這個數組在PHP中的樣子，並相應地驗證每個文件。

echo '<pre>'; print_r($_FILES); echo '</pre>'; 

調試完畢後，記得刪除任何echo或print_r函數調用的函數header之前到來。否則，您將收到以下錯誤：

Warning: Cannot modify header information - headers already sent