This article mainly introduces the method of using PHP to accept files and obtain their suffix names. The author focuses on the use of the $_FILES global variable. Friends in need can refer to
HTML form form
Use an HTML form to simulate a post request for file upload. The code is as follows:
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>File Upload</title> </head> <body> <form enctype="multipart/form-data" action="test.php" method="POST"> <input type="hidden" name="MAX_FILE_SIZE" value="30000" /> Send this File:<input name="userfile" type="file"/> <input type="submit" value="Send File" /> </form> </body> </html>
Note:
Make sure that the attribute of the file upload form is enctype="multipart/form- data", otherwise the file cannot be uploaded
PHP
First of all, you need to explain PHP’s global variable $_FILES. This array contains all uploaded file information
$_FILE['userfile']['name'] : The original name of the client machine file
$_FILE['userfile']['type'] : The file's original name MIME type
$_FILE['userfile']['size'] : Uploaded file size
$_FILE['userfile' ]['tmpname'] : The temporary file name stored on the server after the file is uploaded
$_FILE['userfile']['error'] : and the error code for uploading the file
Ideas
1. Generate a 40-digit random string as the file name
2. Transfer the file to different file locations depending on whether it is a picture or a voice
3. No verification of file size and file type is required for the time being.
function processFile($files, $type) { $uploadName = null; foreach ($files as $name => $value) { $originalName = $value['name']; $arr = explode(".", $originalName); $postfix = $arr[count($arr) - 1]; $tmpPath = $value['tmp_name']; $tmpType = $value['type']; $tmpSize = $value['size']; } $newname = EhlStaticFunction::generateRandomStr(40).".".$postfix; switch ($type) { case 1 : // 处理声音文件 $destination = VIDEOUPLOADDIR.$newname; break; case 2 : // 处理图像文件 $destination = IMAGEUPLOADDIR.$newname; break; } move_uploaded_file($tmpPath, $destination); }
To obtain the suffix name of the uploaded file, you can use the following code:
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <meta name="keywords" content=" keywords" /> <meta name="description" content="description" /> </head> <body> <form method="post" action="" enctype="multipart/form-data"> <input type="file" name="upfile" size="20" /> <input type="submit" name="submit" value="submit" /> </form> </body> </html>
PHP
<?PHP if(isset($_POST['submit'])) { $string = strrev($_FILES['upfile']['name']); $array = explode('.',$string); echo $array[0]; } ?>
Result example:
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