get file size

function Getimageinfo ($img)//$img absolute path for image file { $img _info = getimagesize ($img); Switch ($img _info[2]) { Case 1: $imgtype = "GIF"; Break Case 2: $imgtype = "JPG"; Break Case 3:

PHP implementation of image upload and replace the operation, Create two files first: change.html and change.php The form code for the change.html file is as follows: Change file example. Here are a few things to pay attention to, first look

php file upload and download source code, 　　First, File upload Front page: DOCTYPE HTML>HTML>Head> MetaCharSet= "Utf-8"> title>File Upload title> Head>Body>Div> formMethod= "POST"Action= "upload.php"enctype= "Multipart/form-data"

Copy CodeThe code is as follows: Open File $fp =fopen (' tmp.html ', ' R '); Reading the contents of a file can be done with the following two functions Fread,file_get_contents $str =fread ($fp, FileSize (' tmp.html ')); FileSize to get file

"Turn" Super practical PHP Function Summary, practical PHP function Summary Original link: http://www.codeceo.com/article/php-function.html 1, PHP encryption and decryption PHP encryption and decryption functions can be used to encrypt some useful

#-*-Coding: utf8 -*-'''Python common file operation examplesPath Name access function in the OS. Path ModuleSeparateBasename () removes the directory path and returns the file name.Dirname () removes the file name and returns the directory path.Join

Files: Files + DirectoriesDetermine the file type:filetype ("path"); // returns a string Is_dir ("path"); // If the directory returns true to determine whether the file is directory is_file("path"); // contrary to Dir to determine

Http://www.cnblogs.com/wendingding/p/3947550.htmliOS Development Network chapter-Multi-threaded breakpoint DownloadDescription: This article describes multi-threaded breakpoint downloads. The project uses Apple's own class to enable multiple threads

Curl is the next very famous Linux download library, through this library, can be very simple to implement the download of files and other operations.See a simple example: #include #include #include CURL *curl;

The main idea is to create a blank file with the size of the target file, and then segment the data into this blank file.You can get the exact size of the file in the server by sending a head request, and then split the length into chunks of data

1, PHP encryption and decryption function Encryptdecrypt ($key, $string, $decrypt) {if ($decrypt) {$decrypted = RTrim (Mcrypt_decrypt (mcrypt_rijndael_256, MD5 ($key), Base64_decode ($string), MCRYPT_MODE_CBC, MD5 (MD5 ($ Key)), "12");return

0 Ajaxfileupload IntroductionAjaxfileupload plugin is a very simple jquery-based asynchronous upload file plug-in, using the process found many with the same name, based on the original version of the modified plug-in, the file version is more, I

/** PHP Download Breakpoint continued * From:php100*/functionDl_file_resume ($file){ //detects if a file exists if(!Is_file($file)) { die("404 File not Found!"); } $len=filesize($file);//Get File Size $filename=basename($

In Python, the file operations are mainly from the OS module, the main methods are as follows:Os.listdir (dirname): List directories and files under DirNameOS.GETCWD (): Get current working directoryOs.curdir: Returns the current directory ('.

One, write the file1. Open resource (file) fopen ($filename, $mode)2. Write file fwrite ($handle, $STR)3. Close file fclose ($handle)4. One-step write File_put_contents ($filename, $str, $mode) file_append lock_ex}Second, read the document1. Read

Io middle finger input/output, that is, input and output, where data exchange is involved, usually disk, network, etc., need IO interface1, because the CPU and memory speed is much higher than the speed of the peripheral, so in IO programming, there

Summarize some of this week's content 'Dates: Date creates an object for the current system object. Used to save datesClendar operation of the dateSimpleDateFormat used to swap strings with datesWrapper class: Apply object-oriented principles to 8

I. Overview of OS ModulesThe Python OS module contains common operating system features. This module is especially important if you want your program to be platform-agnostic. (in one's language)Second, common methods1, Os.nameThe output string

functiongettmp () {$file _name= ' ordertemp.xlsx '; $file _path=dirname(__file__); #determine if a file exists if(!file_exists($file _path. ‘/‘ .$file _name)){ Echo"File NOT Exists"; return; } #if present, read-only mode open

$handler=fopen('./abc.html ', ' W ');if(!feof($handler)){//read the end of the file, or you can use file_exists mkdir('./abc.html ', 0777); $handler=fopen('./abc.html ', ' W ');}if(is_writable('./abc.html ')){ $is