fopen filename rb

PHP converts the image format to JPG and automatically scales to the specified size. Recently, when I changed my website to a friend, I found that some of my website images are in PNG format, and the image files are very large, almost all of them

This article mainly shares with you a very useful phpheader downloading function. For more information, see The code is as follows: /** * Send a file * * @ Author: legend (legendsky@hotmail.com) * @ Link: http://www.ugia.cn /? P = 109 * @

This article describes how to obtain the types and extensions of php image processing functions, including image2wbmp, image_type_to_extension, image_type_to_mime_type, and other functions, for more information about how to obtain php image

I recently started mysql. I want to use C to store binary files (64 k, large storage path) in the database over the past two days. after my unremitting search, I found that there is only one version on NET (php is used as an example), and it won't

Php detects common code classes (such as zip and rar) of file types through the file header ). Sometimes this is not perfect. Some people may store some files, but they modify the extension to make it within our file type. It cannot be displayed

Phpfread () tips. Stringfread (inthandle, intlength) fread () reads a maximum of length bytes from the file pointer handle. This function can contain a maximum of length bytes after reading, or when it reaches the EOF. String fread (int handle, int

PHP thumbnails and other proportional lossless compression, can fill the blank area to fill the color. Copy the code as follows :? Phperror_reporting(e_all1_1_test imagezoom(1.jpg, 2.jpg, 400,300, # FFFFFF); * php thumbnail function: proportional

The code for reading text files in php with high efficiency is original. Fread: calculates the length in bytes and reads data according to the specified length and number of times. it stops reading data at the end or after the specified length is

Code used to determine the php file type. $ Filename = "D: \ 296.mid "; $ File = fopen ($ filename, "rb "); $ Bin = fread ($ file, 2); // read-only 2 bytes Fclose ($ file ); $ StrInfo = @ unpack ("c2chars", $ bin ); $ TypeCode = intval ($

The following describes how to use php to read the file header and determine the file type. it supports image, rar, exe, and other suffixes, if you need a file, you can refer to the php code below to read the file header to determine the file type,

This article introduces the function-related knowledge of php file download through the instance code. the introduction is very detailed and has reference value. if you are interested, learn it together. PHP code for downloading objects using

Fread () reads a maximum of length bytes from the file pointer handle. Description String fread (int handle, int length) Fread () reads a maximum of length bytes from the file pointer handle. This function can be read by a maximum of length bytes,

According to the detailed description of the pure IP database format in LumaQQ developer documentation, I have compiled a PHP class for querying IP address region information. During the compilation process, I found that the description of the

This article mainly introduces the summary of functions related to PHP file read/write operations. This article summarizes fwrite (), fread (), fgets (), fgetc (), file (), readfile () for more information about functions and examples, see I. fwrite

Php file download function, PHP code for downloading objects using functionsFunction download ($ url, $ filename ){// Obtain the file size to prevent files exceeding 2 GB from being read by sprintf.$ Filesize = sprintf ("% u", filesize ($ url ));If (

First use Python to make a text file (a study number list)Python code:[email protected] kuing]# cat input.py#!/usr/bin/env pythonf = open (' Design.txt ', ' w+ ')For I in Range (10001,200001):F.write ('%d\n '%i)F.close ()Yes, that's so simple ...And

The getimagesize function obtains the image size (PHP 4, PHP 5) Array getimagesize (string filename [, array & imageinfo]) // note that $ imageinfo does not need to be prefixed during use &. DescriptionThe getimagesize () function will determine any

Most of the thumbnails generated by the website are scaled in proportion. Let's take a look at the fixed image size today. "> the image size will automatically fill in the blank space if it is not enough. For more information, see.  

Php details on how to determine the File Upload image format, Example of php determining File Upload image format Determine the file image type, $ Type = $ _ FILES ['image'] ['tmp _ name']; // file name // $ type = $ this-> getImagetype ($ type ); $

Copy codeThe Code is as follows:// Example:$ Path = ROOT. 'upload/2009/06/03/124401282315771 .';$ PathAll = $ path. 'bmp ';$ Mi = '';$ Mi = ImageCreateFromBMP ($ pathAll );Imagejpeg ($ mi, $ path. 'jpg ');// The function is as follows:Function