Share a class library that encapsulates PHP extension php_imagick.

A previous article has introduced the PHP extension php_imagick. you can see from the manual that imagick provides an extremely rich way to process images. The following describes a class library that encapsulates php_imagick: classlib_imag.

A previous article has introduced the PHP extension php_imagick. you can see from the manual that imagick provides an extremely rich way to process images. The following describes a class library that encapsulates php_imagick:

Class lib_image_imagick {private $ image = null; private $ type = null; // Constructor public function _ construct () {}// destructor public function _ destruct () {if ($ this-> image! = Null) $ this-> image-> destroy ();} // load the image public function open ($ path) {$ this-> image = new Imagick ($ path); if ($ this-> image) {$ this-> type = strtolower ($ this-> image-> getImageFormat ();} return $ this-> image;} public function cropimage ($ width = 0, $ height = 0) {if ($ width <= 0 | $ height <= 0) return; $ this-> image-> cropThumbnailImage ($ width, $ height );} public function thumbnailImage ($ width = 0, $ height = 0) {if ($ width <= 0) Return; $ this-> image-> thumbnailImage ($ width, NULL);} public function crop ($ x = 0, $ y = 0, $ width = null, $ height = null) {if ($ width = null) $ width = $ this-> image-> getImageWidth ()-$ x; if ($ height = null) $ height = $ this-> image-> getImageHeight ()-$ y; if ($ width <= 0 | $ height <= 0) return; if ($ this-> type = 'gif ') {$ image = $ this-> image; $ canvas = new Imagick (); $ images = $ image-> coalesceImages (); foreach ($ images as $ Frame) {$ img = new Imagick (); $ img-> readImageBlob ($ frame); $ img-> cropImage ($ width, $ height, $ x, $ y ); $ canvas-> addImage ($ img); $ canvas-> setImageDelay ($ img-> getImageDelay (); $ canvas-> setImagePage ($ width, $ height, 0, 0) ;}$ image-> destroy (); $ this-> image = $ canvas;} else {$ this-> image-> cropImage ($ width, $ height, $ x, $ y) ;}}/** Change Image Size $ fit: The Adaptive size method 'Force': forces the image to be deformed to $ width X $ height 'scale ': proportional In the security box, scale the image within $ width X $ height. after the output is scaled, the image size is not completely equal to $ width X $ height 'scale _ fill ': scale the image in the security box $ width X $ height proportionally. the color is filled with no pixels in the security box. you can use this parameter to set the background fill color $ bg_color = array (255,255,255) (red, green, blue, transparency) transparency (0-127 transparent) Other: when the smart mode scales the image and loads the middle part of the image $ width X $ height pixel size $ fit = 'force', 'scale', 'scale _ fill: when the complete image $ fit = Image azimuth value is output, the correspondence between letters in the specified position and the image is as follows: north_west north north_eastwest center eastsouth_west south south_east */ Public function resize_to ($ width = 100, $ height = 100, $ fit = 'center', $ fill_color = array (255,255,255, 0) {switch ($ fit) {case 'Force': if ($ this-> type = 'GIF') {$ image = $ this-> image; $ canvas = new Imagick (); $ images = $ image-> coalesceImages (); foreach ($ images as $ frame) {$ img = new Imagick (); $ img-> readImageBlob ($ frame ); $ img-> thumbnailImage ($ width, $ height, false); $ canvas-> addImage ($ img); $ Canvas-> setImageDelay ($ img-> getImageDelay ();} $ image-> destroy (); $ this-> image = $ canvas ;} else {$ this-> image-> thumbnailImage ($ width, $ height, false);} break; case 'scale ': if ($ this-> type = 'GIF') {$ image = $ this-> image; $ images = $ image-> coalesceImages (); $ canvas = new Imagick (); foreach ($ images as $ frame) {$ img = new Imagick (); $ img-> readImageBlob ($ frame ); $ img-> thumbnailImage ($ width, $ Height, true); $ canvas-> addImage ($ img); $ canvas-> setImageDelay ($ img-> getImageDelay ());} $ image-> destroy (); $ this-> image = $ canvas;} else {$ this-> image-> thumbnailImage ($ width, $ height, true );} break; case 'scale _ fill': $ size = $ this-> image-> getImagePage (); $ src_width = $ size ['width']; $ src_height = $ size ['height']; $ x = 0; $ y = 0; $ dst_width = $ width; $ dst_height = $ height; if ($ src_wi Dth * $ height> $ src_height * $ width) {$ dst_height = intval ($ width * $ src_height/$ src_width); $ y = intval ($ height-$ dst_height) /2);} else {$ dst_width = intval ($ height * $ src_width/$ src_height); $ x = intval ($ width-$ dst_width)/2 );} $ image = $ this-> image; $ canvas = new Imagick (); $ color = 'rgba ('. $ fill_color [0]. ','. $ fill_color [1]. ','. $ fill_color [2]. ','. $ fill_color [3]. ')'; if ($ this-> type = 'GIF') {$ images = $ Image-> coalesceImages (); foreach ($ images as $ frame) {$ frame-> thumbnailImage ($ width, $ height, true); $ draw = new ImagickDraw (); $ draw-> composite ($ frame-> getImageCompose (), $ x, $ y, $ dst_width, $ dst_height, $ frame); $ img = new Imagick (); $ img-> newImage ($ width, $ height, $ color, 'GIF'); $ img-> drawImage ($ draw); $ canvas-> addImage ($ img ); $ canvas-> setImageDelay ($ img-> getImageDelay (); $ canvas-> setIm AgePage ($ width, $ height, 0, 0) ;}} else {$ image-> thumbnailImage ($ width, $ height, true); $ draw = new ImagickDraw (); $ draw-> composite ($ image-> getImageCompose (), $ x, $ y, $ dst_width, $ dst_height, $ image); $ canvas-> newImage ($ width, $ height, $ color, $ this-> get_type (); $ canvas-> drawImage ($ draw); $ canvas-> setImagePage ($ width, $ height, 0, 0) ;}$ image-> destroy (); $ this-> image = $ canvas; break; default: $ Size = $ this-> image-> getImagePage (); $ src_width = $ size ['width']; $ src_height = $ size ['height']; $ crop_x = 0; $ crop_y = 0; $ crop_w = $ src_width; $ crop_h = $ src_height; if ($ src_width * $ height> $ src_height * $ width) {$ crop_w = intval ($ src_height * $ width/$ height);} else {$ crop_h = intval ($ src_width * $ height/$ width);} switch ($ fit) {case 'North _ West': $ crop_x = 0; $ crop_y = 0; break; case 'North': $ crop_x = Intval ($ src_width-$ crop_w)/2); $ crop_y = 0; break; case 'North _ East': $ crop_x = $ src_width-$ crop_w; $ crop_y = 0; break; case 'West': $ crop_x = 0; $ crop_y = intval ($ src_height-$ crop_h)/2); break; case 'center ': $ crop_x = intval ($ src_width-$ crop_w)/2); $ crop_y = intval ($ src_height-$ crop_h)/2); break; case 'East ': $ crop_x = $ src_width-$ crop_w; $ crop_y = intval ($ src_height-$ crop_h)/2 ); Break; case 'South _ West': $ crop_x = 0; $ crop_y = $ src_height-$ crop_h; break; case 'South ': $ crop_x = intval ($ src_width-$ crop_w)/2); $ crop_y = $ src_height-$ crop_h; break; case 'South _ East ': $ crop_x = $ src_width-$ crop_w; $ crop_y = $ src_height-$ crop_h; break; default: $ crop_x = intval ($ src_width-$ crop_w)/2 ); $ crop_y = intval ($ src_height-$ crop_h)/2);} $ image = $ this-> image; $ canvas = new Imagick (); if ($ this-> type = 'GIF') {$ images = $ image-> coalesceImages (); foreach ($ images as $ frame) {$ img = new Imagick (); $ img-> readImageBlob ($ frame); $ img-> cropImage ($ crop_w, $ crop_h, $ crop_x, $ crop_y ); $ img-> thumbnailImage ($ width, $ height, true); $ canvas-> addImage ($ img); $ canvas-> setImageDelay ($ img-> getImageDelay ()); $ canvas-> setImagePage ($ width, $ height, 0, 0) ;}} else {$ image-> cropImag E ($ crop_w, $ crop_h, $ crop_x, $ crop_y); $ image-> thumbnailImage ($ width, $ height, true); $ canvas-> addImage ($ image ); $ canvas-> setImagePage ($ width, $ height, 0, 0);} $ image-> destroy (); $ this-> image = $ canvas ;}} // add the watermark image public function add_watermark ($ path, $ x = 0, $ y = 0) {$ watermark = new Imagick ($ path ); $ draw = new ImagickDraw (); $ draw-> composite ($ watermark-> getImageCompose (), $ x, $ y, $ watermark -> GetImageWidth (), $ watermark-> getimageheight (), $ watermark); if ($ this-> type = 'GIF ') {$ image = $ this-> image; $ canvas = new Imagick (); $ images = $ image-> coalesceImages (); foreach ($ image as $ frame) {$ img = new Imagick (); $ img-> readImageBlob ($ frame); $ img-> drawImage ($ draw); $ canvas-> addImage ($ img ); $ canvas-> setImageDelay ($ img-> getImageDelay ();} $ image-> destroy (); $ this-> image = $ canvas;} els E {$ this-> image-> drawImage ($ draw) ;}// add the watermark text public function add_text ($ text, $ x = 0, $ y = 0, $ angle = 0, $ style = array () {$ draw = new ImagickDraw (); if (isset ($ style ['font']) $ draw-> setFont ($ style ['font']); if (isset ($ style ['font _ size']) $ draw-> setFontSize ($ style ['font _ size']); if (isset ($ style ['fill _ color']) $ draw-> setFillColor ($ style ['fill _ color']); if (isset ($ style ['Under _ color']) $ draw-> setTe XtUnderColor ($ style ['Under _ color']); if ($ this-> type = 'GIF') {foreach ($ this-> image as $ frame) {$ frame-> annotateImage ($ draw, $ x, $ y, $ angle, $ text) ;}} else {$ this-> image-> annotateImage ($ draw, $ x, $ y, $ angle, $ text) ;}// save it to the specified path public function save_to ($ path) {if ($ this-> type = 'GIF') {$ this-> image-> writeImages ($ path, true );} else {$ this-> image-> writeImage ($ path) ;}// output image public function out Put ($ header = true) {if ($ header) header ('content-type :'. $ this-> type); echo $ this-> image-> getImagesBlob ();} public function get_width () {$ size = $ this-> image-> getImagePage (); return $ size ['width'];} public function get_height () {$ size = $ this-> image-> getImagePage (); return $ size ['height'];} // set the image type. the default value is the same as the source type. public function set_type ($ type = 'PNG ') {$ this-> type = $ type; $ this-> image-> setImageFormat ($ Type) ;}// obtain the source image type public function get_type () {return $ this-> type ;}// whether the current object is an image public function is_image () {if ($ this-> image) return true; elsereturn false;} public function thumbnail ($ width = 100, $ height = 100, $ fit = true) {$ this-> image-> thumbnailImage ($ width, $ height, $ fit );} // Generate a thumbnail $ fit will keep the proportion when it is true and generate a thumbnail in the security box $ width X $ height/* Add a border $ width: left and right border width $ height: border width $ color: RGB color 'rgb (255, 0, 0 )' Or the hexadecimal color '# ff0000' or the color word 'white'/'red '... */public function border ($ width, $ height, $ color = 'rgb (220,220,220) ') {$ color = new ImagickPixel (); $ color-> setColor ($ color); $ this-> image-> borderImage ($ color, $ width, $ height);} public function blur ($ radius, $ sigma) {$ this-> image-> blurImage ($ radius, $ sigma);} // blur public function gaussian_blur ($ radius, $ sigma) {$ this-> image-> gaussianBlurImage ($ radius, $ sigma );}/ /Gaussian fuzzy public function motion_blur ($ radius, $ sigma, $ angle) {$ this-> image-> motionBlurImage ($ radius, $ sigma, $ angle );} // motion blur public function radial_blur ($ radius) {$ this-> image-> radialBlurImage ($ radius);} // radial blur public function add_noise ($ type = null) {$ this-> image-> addNoiseImage ($ type = null? Imagick: NOISE_IMPULSE: $ type);} // add a noise public function level ($ black_point, $ gamma, $ white_point) {$ this-> image-> levelImage ($ black_point, $ gamma, $ white_point);} // adjust the color level public function modulate ($ brightness, $ saturation, $ hue) {$ this-> image-> modulateImage ($ brightness, $ saturation, $ hue);} // adjusts the brightness, saturation, and tone of the public function charcoal ($ radius, $ sigma) {$ this-> image-> charcoalImage ($ radius, $ sigma);} // sketch public function oil_paint ($ radius) {$ this-> image-> oilPaintImage ($ radius);} // oil painting effect public function flop () {$ this-> image-> flopImage () ;}// horizontal flip public function flip () {$ this-> image-> flipImage () ;}// vertical flip}

Tutorial:
1. cut the image:

$image = new lib_image_imagick();$image->open('test.jpg');$image->cropimage(200, 120);$image->save_to('test1.jpg');

2. generate a thumbnail:

$image = new lib_image_imagick();$image->open('test.jpg');$image->thumbnailImage(50, 50);$image->save_to('test_small.jpg');

3. add an image watermark:

$image = new lib_image_imagick();$image->open('test.jpg');$image->add_watermark('test_small.jpg');$image->save_to('test_water.jpg');

4. add a text watermark:

$image = new lib_image_imagick();$image->open('test.jpg');$image->add_text('http://www.phpddt.com',50,50,0,array('font'=>'ARIAL.TTF','font_size'=>14,'fill_color'=>'white','under_color'=>'black'));$image->output();

5. change the image size:

$image = new lib_image_imagick();$image->open('test.jpg');$image->resize_to(800,800);$image->output();

In addition, you can also flip, add borders, Blur, and other effects.