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The first language used is PHP, plugin imgareaselect (download address), not much fancy style, index.php code is as follows:
Copy Code code as follows:
After uploading the picture, copy the picture to the upload folder below
if ($_post) {
$photo = $_files[' img ' [' name '];
$tmp _addr = $_files[' img '] [' tmp_name '];
$path = ' upload/'
How does PHP crop an image to a fixed size?
Make a homepage call Image, sometimes you need to get a fixed size image, because the image position of the homepage is usually specified by the designer, if it is for the lates
side is scaled down, add an equal judgment.For 1, 2, the function processing code is identical, so it can be summarized into a processing statement.
Php implementation code
/** Description: The function is to crop an image of any size without deformation.* Parameter description: Enter the file name of the image to b
any image is cropped to a fixed size, the image is not deformed, the blank space is stretched and filled, and the image is always full without blank space. Friends who have used bcastr should know, bcastr ensures that the image call is not distorted. For a fixed size output image
, the returned address is/data/attachment/forum/aaaaaa_200_100.jpg. Currently, this image does not exist. see Step 2.
Step 2 add apache rewrite rules
RewriteEngine on
RewriteCond % {REQUEST_FILENAME }! -D
RewriteCond % {REQUEST_FILENAME }! -F
RewriteRule ^ data/attachment/(. *) $ images. php? Url = $1 [L]
The above means that all files that do not exist at the beginning of data/attachemen
PHP + jQuery + Ajax for multi-Image Upload,
Today, I want to share with you how to use PHP + jQuery + Ajax to upload multiple images without refreshing new pages. You only need to click
Php+jquery+ajax implementation of multi-image upload introduction:In this article, we use an AJAX form to submit a plugin: Jqery.form.js, someone modified a few lines of code and renamed: Jquery.wallform.js, directly used.Here is to introduce the use of this powerful plug-in, the need for friends can do a reference.Wit
This article provides a free PHP image processing class: Thumbnail, clipping, fillet, tilt code, he can cut out different styles of pictures oh, haha, more than the other online cut diagram is much better oh.
PHP Tutorial Picture Processing class: Thumbnail, crop, fillet, tilt
Class Resizeimage
{
Type of picture
v
Jquery + ajax + php image Upload recently wrote the course design of "online shopping mall", using image upload.
I want to implement the following functions: (1) uploading multiple images, but of course there are limits. a maxim
Ajax multi-image upload interfaceWe place a form on the page and use post to submit it to the backend php processing program upload. php. Note that the enctype attribute setting must support file upload. # Preview is used to displ
How to select the cropping area based on the four coordinate cropping methods for the image? four coordinate parameters are generated based on the juqery Image Plugin? X155amp;y117amp;x2420amp;y2265amp;fileimages1600x0000.jpg based on the four coordinate parameters, crop the original 600*1200 image in the specified are
Source: http://www.ido321.com/875.html1, using the PHP GD library function to draw 3D fan chart 1: 2: header ("Content-type","Text/html;charset=utf-8"); 3:/* Sector chart * / 4: $image = Imagecreatetruecolor (+); / * Create canvas * / 5: 6:/* Set the color required for the canvas * / 7: $white = imagecolorallocate ($image, 0xff,0xff,0xff);
Today, I share with you the premise of not refreshing the page, using Php+jquery+ajax to achieve multiple image upload effect. Users simply click to select the image to upload, and the picture is automatically uploaded to the serv
1
Getimagewidth (); Ten $height = $Image->getimageheight (); 11//Determine if the photo is long and wide equal to the IF ($width! = $height) {13//unequal) first truncate the image center portion with the minimum edge ($width > $height) {1 5 $x = ($width-$height)/2; $y = 0; $width = $height; }else{$y = ($height-$width)/2; $x = 0; $height = $width; 22 } $Image
Picture clipping refers to a large background picture cropped out a designated area of the picture, the common application is in the user set personal avatar, can be uploaded from the picture, cut out a suitable area as their personal portrait picture. Image cropping is similar to picture scaling, so it is also accomplished with the help of the imagecopyresampled () function. Also, take the JPEG image forma
-drop operations.
The following describes how to obtain the FileList object:
2. Blob Object
A Blob Object is a class file object that contains read-only raw data. data in Blob objects is not necessarily in the native form of JavaScript. the File interface is based on Blob, inherits the Blob function, and supports the extension of local files on the user's computer.
The object URL we want to obtain is actually obtained from the Blob object, because the File interface inherits Blob. The followin
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