PHP receives uploaded files_PHP tutorial-PHP Tutorial-php.cn

PHP receives uploaded files_PHP tutorial

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Release： 2016-07-13 10:42:14

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Foreword

I've been working on PHP this week, and I've forgotten a bit about file uploading. I'll record it here.

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>




</body>
</html>

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Notice:
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

Thoughts

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 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);
}

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