Shulou(Shulou.com)06/03 Report--

This article shows you what the common image processing methods encapsulated in the CI framework are, which are concise and easy to understand, which can definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

In fact, Wechat mobile phone on the picture, the list had better be a thumbnail, save traffic, this is not, and was a mobile trick, the phone bill signed a point to stop, traffic less than 90 yuan to stop, I am also drunk.

Cut the crap, the following is written with CI's built-in image processing library

/ * generate thumbnails * @ param $path local path * @ return null create an original image _ thumb. File with extension * * / public function dealthumb ($path) {$config ['image_library'] =' gd2'; $config ['source_image'] = $path; $config [' create_thumb'] = TRUE; / / the resulting thumbnail will be close to the set width and height $config ['maintain_ratio'] = TRUE; $config [' width'] = 80; $config ['height'] = 80 in width and height $this- > load- > library ('image_lib', $config); $this- > image_lib- > resize (); $this- > image_lib- > clear ();} / * * handle image rotation * / public function transroate ($path,$imgpath) {$this- > load- > library (' image_lib'); / / (required) set image library $config ['image_library'] =' gd2'; $newname = time ().'_ rote.jpg' / / set the target name / path of the image $config ['new_image'] = $imgpath.$newname; / / (must) set the name / path of the original image $config [' source_image'] = $path; / / determine whether the generation of the new image is written to the hard disk or dynamically exist $config ['dynamic_output'] = FALSE; / / set the quality of the image. The higher the quality, the larger the image file $config ['quality'] =' 90% rotation; / / there are 5 rotation options counterclockwise 90 180 270 degrees vrt vertical flip hor horizontal flip $config ['rotation_angle'] =' vrt'; $this- > image_lib- > initialize ($config); if (@ $this- > image_lib- > rotate ()) {$this- > image_lib- > clear (); return $config ['new_image'] } else {$this- > image_lib- > clear (); return';}} / * * process image watermarking * / public function overlay ($path,$imgpath) {$this- > load- > library ('image_lib'); $newname = time ().' _ over.jpg'; / / set the new image name $config ['new_image'] = $imgpath.$newname / / call php gd library drawing $config ['image_library'] =' gd2'; / / source image local address $config ['source_image'] = $path; / / overlay text $config [' wm_text'] = 'Copyright 2015-Friker'; / / overlay type text / image $config [' wm_type'] = 'text' / / text font type / / $config ['wm_font_path'] =' C:\ Windows\ Fonts\ vrinda.ttf'; / / font size $config ['wm_font_size'] =' 16'; / / Font color $config ['wm_font_color'] =' ff0000'; / / Vertical distance from the top $config ['wm_vrt_alignment'] =' 20' / / horizontal distance to the left end $config ['wm_hor_alignment'] =' center'; / / padding $config ['wm_padding'] =' 20 years; $this- > image_lib- > initialize ($config); if ($this- > image_lib- > watermark ()) {$this- > image_lib- > clear (); return $config ['new_image'];} else {$this- > image_lib- > clear (); return'' }} / * handle picture upload * File upload class uploads files through the foreground * / public function uploadfile () {/ / File upload part / / process files / / $data =''; $this- > load- > helper ('url'); $formpic = key ($_ FILES) / / File processing part if (false = empty ($_ FILES [$formpic] ['tmp_name']) {/ / set the path of file upload $upload [' upload_path'] = ". / public/img/"; / / restrict the type of file upload $upload ['allowed_types'] =' jpeg | jpg | gif | png'; / / limit the size of file upload $upload ['max_size'] = 2048 / / set the path for file upload $upload ['file_name'] = date (' YmdHis', time ()) .rand (10000, 99999); / / load file upload configuration information $this- > load- > library ('upload', $upload); / / process file upload $this- > upload- > do_upload ($formpic); / / return file upload information $image = $this- > upload- > data () / * 'file_name' = > string' 2015071702051718388.jpg' (length=23) 'file_type' = > string' image/jpeg' (length=10) 'file_path' = > string'Elevue' (length=30) 'full_path' = > string' Vega 'full_path' = > string' Vega 'raw_name' = > string' 2015071702051718388' (length=19) 'orig_name' = > string' 2015071702051718388.jpg' (length=23) 'client_name' = > string'upright 415761610 1548338330fmlegs 116gpcards 0.jpg' (length=38) 'file_ext' = > string' .jpg'(length=4) 'file_size' = > float 3.74' is_image' = > boolean true 'image_width' = > int 146' image_height' = > int 220' Image_type' = > string 'jpeg' (length=4)' image_size_str' = > string 'width= "146" height= "220" (length=24) * / var_dump ($image) / / return file upload name $data = $image ['file_name']; $this- > dealthumb ($image [' full_path']); $this- > overlay ($image ['full_path'], $image [' file_path']); $this- > transroate ($image ['full_path'], $image [' file_path']); / / $thumbdata ='' / / generate thumbnail name $pos = strripos ($image ['file_name'], "."); $newname = substr ($image [' file_name'], 0Powerpos). "_ thumb" .substr ($image ['file_name'], $pos); if (file_exists ($image [' file_path']. $newname)) {$thumbdata = $newname;}} / / $dirroot = $SERVER ['DOCUMENT_ROOT'] / / $this- > dealthumb ($dirroot. "/ public/img/". $data); / / upload failed if (! $data) {echo json_encode ('status'= > 0 recording msg upload = > "upload failed!")) ;} else {/ / successfully uploaded echo json_encode (array ('name'= > $data,' pic'= > base_url (). "public/img/". $data, 'picthumb'= > $thumbdata = ='? $data:$thumbdata);}}

Here is the basic html code for the front end:

Body {background:#eeeeee; margin:0px;} share logo: (the optimal size is 80 X 80 pixels)

$(function () {/ * start of image upload section * / var act = "

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