Php Imagejpeg

Imagehttp://www.aliyun.com/zixun/aggregation/16701.html ">jpeg (PHP3 >= 3.0.16, PHP4 >= 4.0rc1) ImageJPEG--- Output graphics to the refer or file syntax: int imagejpeg (int im [, string filename [, int q ...)

In the Web application is often used to generate pictures of this function, in the PHP tutorial to create pictures need to support the GD library to create graphics, with this graphic function, we can easily generate thumbnails, verification code, to add watermarks and so on. In PHP to install the GD library to normal operation to create a picture function, the following methods, in the win system, find php.ini put; Extension=php_gd2.dll front ";" Go, and back up Apache OK. Here we look at the example of PHP ...

php tutorial image upload code (with thumbnails and add watermarking function) This picture upload source code is a can upload pictures and also has to upload images generated thumbnails and watermarking Oh, can be said to be a perfect Image upload category Oh. class upfile {public $ filepath = "www.jzread.com/"; / / upload files stored in the folder public $ filesize = 10 ...

In PHP to generate a CAPTCHA image is quite simple, because in PHP for us to provide a graphics Gd.dll library, to enable the GD graphics library we just php.ini in the PHP-GD front; Method a $authnum = '; $ychar = "0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z&qu ...

Write your own PHP image upload and generate thumbnail function Please refer to the function is divided into three parts First, PHP image upload function Second, PHP generate thumbnail function Third, PHP message prompt function PHP image upload function is as follows: function img_upload ( $ form_name, $ size, $ dir, $ file_name, $ width, $ height) {// file domain name, file size limit, file storage path, thumbnail width, thumbnail height ...

This PHP tutorial generates pictures and verification code picture generation principle code, is by the PHP GD library to support, if your system can not create a picture on the front of the Gd.dll; ? $w? $RESIZEWIDTH = $w: $RESIZEWIDTH =400;//to generate the width of the picture $h? $RESIZEHEIGHT = $h: $RESIZEHEIGHT =400;//The height of the picture fun ...

- php tutorial to upload pictures and generate the specified size chart in proportion This is an image thumbnail function Oh, upload a new picture to $ srcfile Then file $ thumbwidth thumbnail width maximum size and $ thumbheitht thumbnail image maximum size Generate a thumbnail. Image thumbnail function parameters: $ srcfile original address; $ dir new map directory $ thumbwidth thumbnails width maximum size $ thumbheitht thumbnails thumbnails ...

PHP Tutorial upload pictures and a transparent watermark to the picture $im = Imagecreatefromjpeg ($_file["Upload"] ["tmp_name"]); You want to fetch water. Example of the picture $watermark = Imagecreatefrompng ("Smiley.png"); The path $im _x = Imagesx ($im) of the watermark map; ...

<?php//Save the image of the newspaper as head upload. Define (' Sd_root ', DirName (__file__). /'); @header ("expires:0"); @header ("Cache-control:private, Post-check=0, pre-check=0, max-age=0", FALSE); @header.

PHP generated Chinese authentication code garbled problem solving//will be processed Chinese characters, first from the UTF8 of Chinese characters into an HTML entity form to reuse. Example code://ini_set (' jis-mapped Japanese Font Support ', false); $pic =imagecreate (250,30); $black =imagecolorallocate ($pic, 0,0,0); $white =imagecoloral ...