Question

我使用php为我的网站构建了一个表单。提交表单后，内容将通过电子邮件发送给我，用户将被重定向到其他页面。当我完全填写表单时，代码工作正常。但是，其中一个字段是文件上传，当我不上传任何内容时，表单仍然发送但导致500内部服务器错误页面。如何在不上传文件时将表单重定向到正确的页面？我在下面加了我的代码

<?php
$email_to = "ashley@MyURL.com";
$email_subject = "Completed Questionnaire";
$name = $_POST['name'];
$gradyear = $_POST['gradyear']; 
$hschool = $_POST['hschool']; 
$hometown = $_POST['hometown'];
$email_from = $_POST['email']; 
$DOB = $_POST['DOB']; 
$GPA = $_POST['GPA']; 
$height = $_POST['height']; 
$weight = $_POST['weight'];
$about = $_POST['about'];

$message = "Form details below.\n\n";  
function clean_string($string) {
$bad = array("content-type","bcc:","to:","cc:","href");
return str_replace($bad,"",$string);}

$message .= "Name: ".clean_string($name)."\n";
$message .= "Graduation Year: ".clean_string($gradyear)."\n";
$message .= "High School: ".clean_string($hschool)."\n";
$message .= "Hometown: ".clean_string($hometown)."\n";
$message .= "Email: ".clean_string($email_from)."\n";
$message .= "Date of Birth: ".clean_string($DOB)."\n";
$message .= "GPA: ".clean_string($GPA)."\n";
$message .= "Height: ".clean_string($height)."\n";
$message .= "Weight: ".clean_string($weight)."\n";
$message .= "About: ".clean_string($about)."\n";


/* GET File Variables */ 
$tmpName = $_FILES['attachment']['tmp_name']; 
$fileType = $_FILES['attachment']['type']; 
$fileName = $_FILES['attachment']['name']; 

/* Start of headers */ 
$headers = "From: $email_from"; 

if (file($tmpName)) { 
/* Reading file ('rb' = read binary)  */
$file = fopen($tmpName,'rb'); 
$data = fread($file,filesize($tmpName)); 
fclose($file); 

/* a boundary string */
$randomVal = md5(time()); 
$mimeBoundary = "==Multipart_Boundary_x{$randomVal}x"; 

/* Header for File Attachment */
$headers .= "\nMIME-Version: 1.0\n"; 
$headers .= "Content-Type: multipart/mixed;\n" ;
$headers .= " boundary=\"{$mimeBoundary}\""; 

/* Multipart Boundary above message */
$message = "This is a multi-part message in MIME format.\n\n" . 
"--{$mimeBoundary}\n" . 
"Content-Type: text/plain; charset=\"iso-8859-1\"\n" . 
"Content-Transfer-Encoding: 7bit\n\n" . 
$message . "\n\n"; 

/* Encoding file data */
$data = chunk_split(base64_encode($data)); 

/* Adding attchment-file to message*/
$message .= "--{$mimeBoundary}\n" . 
"Content-Type: {$fileType};\n" . 
" name=\"{$fileName}\"\n" . 
"Content-Transfer-Encoding: base64\n\n" . 
$data . "\n\n" . 
"--{$mimeBoundary}--\n"; 
} 

@mail($email_to, $email_subject, $message, $headers);  
header("Location: http://myURL.com/contact.html");

?>

Answer 1

在操作文件之前，您应首先检查文件是否确实已上传：

if ( ! empty($_FILES)) {
//file manipulation...
}

如何让我的PHP表单正常工作？

1 个答案: