php image

first, make sure to start PHP gd2 Library; start Extension=php_gd2.dll in php.ini; $im = Imagecreatetruecolor (+); $red = Imagecolorallocate($im,255,0,0); //imageellipse ($im, 40,20,20,20, $red); //imageline ($im, 0,0,400,300, $red);

// Create image $image = Imagecreatetruecolor( -, the); // Assign some colors$white = imagecolorallocate($image, 0xFF, 0xFF, 0xFF); $gray = imagecolorallocate($image, 0xC0, 0xC0, 0xC0);

This article describes how to use the imagecolorallocate () function to set the color for PHP image processing. This article provides two ways to set the color in decimal and hexadecimal notation, for more information about how to use PHP to

This article mainly introduces the example of using imagecopyresampled function to crop images for PHP image processing. This example is relatively simple and is an entry-level learning summary, for more information, see crop images in a large

This article mainly introduces PHP Image Processing's image rotation and Image flip instances. This article uses the imagerotate function to implement and customize multiple functions to meet functional requirements, you can refer to the rotation

This article mainly introduces the PHP image cropping function, while keeping the image not deformed. For more information, see automatically crop the image after uploading, and then display the cropped image on the foreground. The requirement is as

PHP images are automatically cropped to display different sizes. PHP image auto-cropping to cope with display of different sizes. if you have been a friend of the Portal Station, you must know that an image may be displayed in different places, with

: This article describes how to add, compress, and cut php image watermarks. For more information about PHP tutorials, see. Php's operations on image files mainly use the GD Library extension. When we frequently use php to operate images, we will

The first simple PHP image upload program: Php section The code is as follows: If ($ _ FILES ['file'] ['error']> 0 ){Echo '! Problem :';Switch ($ _ FILES ['file'] ['error']){Case 1: echo 'file size exceeds server limited ';Break;Case 2: echo

Recently in the Web page drag verification code of open source projects, need to generate images on the server of the corresponding movable color blocks, but the resources on the Internet are thumbnails, the entire picture is scaled, so do it

PHP image verification code production (medium ). Code for randomly generating numbers and letters :? Phpche. phpsession_start (); for ($ i0; $ i4; $ I ++) {$ rand. dechex (rand ();} $ _ SESSION [check_num] $ rand; $ imageimagecreatetruecolor (50

PHP image collection program-image collection The code comes from my blog: Ghost ~~~~~ ? Class Collection { Protected $ url; // Collection Address Protected $ prefix; // rename the file prefix Protected $

First, create a picture resource Imagecreatetruecolor (width,height); imagecreatefromgif (picture name); imagecreatefrompng (picture name); Imagecreatefromjpeg (image name) ; draw a variety of image imagegif (picture resource, save path); Imagepng

The example of PHP image processing function imagecopyresampled usage is described in this paper. Share to everyone for your reference, as follows: Grammar BOOL Imagecopyresampled (Resource $DST _image, resource $src _image, int $dst _x, int $dst

Returns an array with four units. Index 0 contains the pixel value of the image width, and index 1 contains the pixel value of the image height. I. create image resources Imagecreatetruecolor (width, height); imagecreatefromgif (image name);

In php, adding watermarks to Chinese characters requires some simple processing. one is to convert characters into gbk, and the other is to load Chinese fonts, with these two conditions, adding a Chinese watermark to the image is simple. Example 1

Upload a complete PHP image, generate a thumbnail, and insert the database code. The following is a complete code for generating thumbnails and inserting data into the database when uploading images in PHP .? Php $ title $ _ POST [title]; $ descr

(Code snippet test successful, upload successfully!) ） Because of the impulse to learn PHP code yesterday, it came from something like imitating the image Library of a similar company. Therefore, today when the most basic function of the

Php implements Image uploading on the client and server ,. Php image uploading client and server implementation method. This article describes how php uploads image clients and servers. Share it with you for your reference. The specific steps are as

/* * Function: PHP image watermark (watermark supports picture or text) Parameters * $groundImage background image, that is, need to add a watermark image, temporarily only support gif,jpg,png format; * $waterPos watermark