jquery+php to achieve picture online cropping

/ * Goofy 2011-11-29 * Image processing: According to the coordinates passed over the parameters, X,y,w,h, followed by the selected x-coordinate, y-coordinate, W-width, h-height through the imagecopy () Method copy the region to the blank image created in the first step , note that the Imagecreatetruecolor () True color is used when creating the image, otherwise the imagecreate () image will be distorted. free picture cut no scale /** * Goofy 2011-11-29 * Image processing: According to the coordinate parameters passed, x,y,w,h, followed by the selected x-coordinate, y-coordinate, W-width, h-height * Copy the area to a blank image created in the first step by using the Imagecopy () method * Note that when creating an image, use Imagecreatetruecolor () True Color, otherwise the imagecreate () image will be distorted */ The proportion of pages passed over $scale =$_get[' scale '); The following attribute is multiplied by the corresponding scale $x =$_get[' x ']* $scale; $y =$_get[' y ']* $scale; $w =$_get[' W ']* $scale; $h =$_get[' h ']* $scale; Source Path $src =$_get[' src ']; Do you want to continue? If you do not continue in this picture, the source picture will be deleted $again = "Off"; if (!empty ($_get[' again ')) { $again =$_get[' again ']; } The first step is to create a picture based on the wide, high parameters, and then just fill the area with the intercepted part. Header ("Content-type:image/jpeg"); $target = @imagecreatetruecolor ($w, $h) Or Die ("Cannot Initialize new GD image Stream"); The second step is to get the source image according to the path and create an image object with the source images. $source = Imagecreatefromjpeg ($SRC); The third step, according to the parameters, select a portion of the source image to fill in the image created in the first step Imagecopy ($target, $source, 0, 0, $x, $y, $w, $h); Fourth step, Save the image Intercept and organize new paths $pos _path= Strripos ($SRC, "/"); $newPath =substr ($src, 0, $pos _path-strlen ($SRC)). " _new/"; Intercept and organize new names $pos _name=strripos ($SRC, "."); $newName =substr ($src, 0, $pos _name); $pos _name_= Strripos ($newName, "/"); There is temporarily no suffix ". jpg" to prevent duplicate files, if any, need to rename, add after Will inconvenient $newName =substr ($newName, $pos _name_-strlen ($newName) +1). " _"; Create a picture with no suffix $file = $newPath. $newName; Append ASC Code Rename file, can also use random number, time and so on named, project requirements I don't use those naming methods. for ($i =0; $i <26; $i + +) { If the directory exists if (Is_dir ($newPath)) { If the file exists, continue looping until there are no duplicate files if (Is_file ($file. chr (97+ $i). ". JPG ")) { Continue }else{ Create a file Imagejpeg ($target, $file. chr (97+ $i). ". JPG ", 100); File creation complete determines whether to delete source files, off to delete source files if ($again = = "Off") { Unlink ($SRC); unset ($_session[' url '); } Break } }else{ Create a Directory mkdir ($newPath); Create a file Imagejpeg ($target, $file. chr (97+ $i). ". JPG ", 100); File creation complete determines whether to delete source files, off to delete source files if ($again = = "Off") { Unlink ($SRC); unset ($_session[' url '); } Break } } Jump to Homepage Header ("Location:index.php"); ?> Copy Code

JQuery, PHP

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