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How to use PHP to accept files and get their suffix names, _PHP tutorial
- WBOYOriginal
- 2016-07-13 09:45:061022browse
Use PHP to accept files and get their suffix names,
HTML form
Use an HTML form to simulate a post request for file upload. The code is as follows:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<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 the attribute of the file upload form is enctype="multipart/form-data", otherwise the file cannot be uploaded
PHP
First, we 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'] : MIME type of the file
- $_FILE['userfile']['size'] : Uploaded file size
- $_FILE['userfile']['tmpname'] : The temporary file name stored on the server after the file is uploaded
- $_FILE['userfile']['error'] : and the error code for uploading the file
Ideas
1. Generate a 40-digit random string as the file name
2. Transfer the file to different file locations depending on whether it is a picture or a voice
3. No verification of file size and file type will be performed for the time being
function processFile($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, $destination);
}
To get the suffix of the uploaded file, you can use the following code:
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <meta name="keywords" content=" keywords" /> <meta name="description" content="description" /> </head> <body> <form method="post" action="" enctype="multipart/form-data"> <input type="file" name="upfile" size="20" /> <input type="submit" name="submit" value="submit" /> </form> </body> </html>
PHP
<?PHP
if(isset($_POST['submit'])) {
$string = strrev($_FILES['upfile']['name']);
$array = explode('.',$string);
echo $array[0];
}
?>
Example results:
