php上传&email处理

来源：互联网发布：sqlserver大数据优化编辑：程序博客网时间：2024/06/02 14:52

上传文件

表单页面：

<html><body><form action="upload_file.php" method="post"enctype="multipart/form-data"><label for="file">Filename:</label><input type="file" name="file" id="file" /> <br /><input type="submit" name="submit" value="Submit" /></form></body></html>

上传脚本：

<?phpif ($_FILES["file"]["error"] > 0)  {  echo "Error: " . $_FILES["file"]["error"] . "<br />";  }else  {  echo "Upload: " . $_FILES["file"]["name"] . "<br />";  echo "Type: " . $_FILES["file"]["type"] . "<br />";  echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";  echo "Stored in: " . $_FILES["file"]["tmp_name"];  }?>

上传限制：

<?phpif ((($_FILES["file"]["type"] == "image/gif")|| ($_FILES["file"]["type"] == "image/jpeg")|| ($_FILES["file"]["type"] == "image/pjpeg"))&& ($_FILES["file"]["size"] < 20000))  {  if ($_FILES["file"]["error"] > 0)    {    echo "Error: " . $_FILES["file"]["error"] . "<br />";    }  else    {    echo "Upload: " . $_FILES["file"]["name"] . "<br />";    echo "Type: " . $_FILES["file"]["type"] . "<br />";    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";    echo "Stored in: " . $_FILES["file"]["tmp_name"];    }  }else  {  echo "Invalid file";  }?>

保存上传文件脚本：

<?phpif ((($_FILES["file"]["type"] == "image/gif")|| ($_FILES["file"]["type"] == "image/jpeg")|| ($_FILES["file"]["type"] == "image/pjpeg"))&& ($_FILES["file"]["size"] < 20000))  {  if ($_FILES["file"]["error"] > 0)    {    echo "Return Code: " . $_FILES["file"]["error"] . "<br />";    }  else    {    echo "Upload: " . $_FILES["file"]["name"] . "<br />";    echo "Type: " . $_FILES["file"]["type"] . "<br />";    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";    if (file_exists("upload/" . $_FILES["file"]["name"]))      {      echo $_FILES["file"]["name"] . " already exists. ";      }    else      {      move_uploaded_file($_FILES["file"]["tmp_name"],      "upload/" . $_FILES["file"]["name"]);      echo "Stored in: " . "upload/" . $_FILES["file"]["name"];      }    }  }else  {  echo "Invalid file";  }?>

发电子邮件

函数格式：

mail(to,subject,message,headers,parameters)

参数描述to必需。规定 email 接收者。subject必需。规定 email 的主题。注释：该参数不能包含任何新行字符。message必需。定义要发送的消息。应使用 LF (\n) 来分隔各行。headers

可选。规定附加的标题，比如 From、Cc 以及 Bcc。

应当使用 CRLF (\r\n) 分隔附加的标题。

parameters可选。对邮件发送程序规定额外的参数。

<?phpif (isset($_REQUEST['email']))//if "email" is filled out, send email  {  //send email  $email = $_REQUEST['email'] ;   $subject = $_REQUEST['subject'] ;  $message = $_REQUEST['message'] ;  mail( "someone@example.com", "Subject: $subject",  $message, "From: $email" );  echo "Thank you for using our mail form";  }else//if "email" is not filled out, display the form  {  echo "<form method='post' action='mailform.php'>  Email: <input name='email' type='text' /><br />  Subject: <input name='subject' type='text' /><br />  Message:<br />  <textarea name='message' rows='15' cols='40'>  </textarea><br />  <input type='submit' />  </form>";  }?>

防止email注入设置：

<html><body><?phpfunction spamcheck($field)  {  //filter_var() sanitizes the e-mail   //address using FILTER_SANITIZE_EMAIL  $field=filter_var($field, FILTER_SANITIZE_EMAIL);    //filter_var() validates the e-mail  //address using FILTER_VALIDATE_EMAIL  if(filter_var($field, FILTER_VALIDATE_EMAIL))    {    return TRUE;    }  else    {    return FALSE;    }  }if (isset($_REQUEST['email']))  {//if "email" is filled out, proceed  //check if the email address is invalid  $mailcheck = spamcheck($_REQUEST['email']);  if ($mailcheck==FALSE)    {    echo "Invalid input";    }  else    {//send email    $email = $_REQUEST['email'] ;     $subject = $_REQUEST['subject'] ;    $message = $_REQUEST['message'] ;    mail("someone@example.com", "Subject: $subject",    $message, "From: $email" );    echo "Thank you for using our mail form";    }  }else  {//if "email" is not filled out, display the form  echo "<form method='post' action='mailform.php'>  Email: <input name='email' type='text' /><br />  Subject: <input name='subject' type='text' /><br />  Message:<br />  <textarea name='message' rows='15' cols='40'>  </textarea><br />  <input type='submit' />  </form>";  }?></body></html>

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