<?php
| The code is as follows | Copy Code |
| if ($_get[' Action '] = = ' Save ' { $up = new Upload (); $up->set_dir ( DirName (__file__). ' /upload/', ' {y}/{m} '); $up->set_thumb (100,80) ; $up->set_watermark (dirname (__file__). /jblog/images/watermark.png ', 6,90); $fs = $up- >execute (); var_dump ($FS); } |
|
?>
| The code is as follows | Copy Code |
| <html> <head><title>test</title></head> <body style= "margin:0;padding:0" > <form name= "Upload" method= "post" action= "Action=save" enctype= "Multipart/form-data" style= "margin:0" > <input type= "File" Name= "attach[]"/> <input type= "File" Name= "attach[]"/> <input type= "Submit" name= "submit" value= "Upload"/> </form> </body> </html> |
|
| The code is as follows | Copy Code |
| Class Upload { var $dir; Attachment Storage Physical Directory var $time; Custom File Upload Time var $allow _types; Allow upload attachment type var $field; Upload Control Name var $maxsize; Maximum allowable file size in KB var $thumb _width; Thumbnail width var $thumb _height; Thumbnail height var $watermark _file; Watermark Picture Address var $watermark _pos; Watermark Location var $watermark _trans;//Watermark Transparency Constructors $types: File types allowed to upload, $maxsize: Allowed size, $field: Upload control name, $time: Custom upload Time function upload ($types = ' jpg|png ', $maxsize = 1024, $field = ' attach ', $time = ') { $this->allow_types = explode (' | ', $types); $this->maxsize = $maxsize * 1024; $this->field = $field; $this->time = $time? $time: Time (); } Set up and create a directory where files are stored specifically $basedir: Base directory, must be a physical path $filedir: Custom subdirectory, available parameters {Y}, {m}, {d} function Set_dir ($basedir, $filedir = ' ") { $dir = $basedir; !is_dir ($dir) && @mkdir ($dir, 0777); if (!emptyempty ($filedir)) { $filedir = str_replace (Array (' {y} ', ' {m} ', ' {d} '), Array (date (' Y ', $this->time), date (' m ', $this->time), date (' d ' , $this->time)), Strtolower ($filedir)); $dirs = explode ('/', $filedir); foreach ($dirs as $d) { !emptyempty ($d) && $dir. = $d. '/'; !is_dir ($dir) && @mkdir ($dir, 0777); } } $this->dir = $dir; } Picture thumbnail settings, not set if you don't generate thumbnails $width: Thumbnail width, $height: thumbnail height function Set_thumb ($width = 0, $height = 0) { $this->thumb_width = $width; $this->thumb_height = $height; } Picture watermark settings, if not generated add watermark is not set $file: Watermark picture, $pos: Watermark location, $trans: Watermark Transparency function Set_watermark ($file, $pos = 6, $trans = 80) { $this->watermark_file = $file; $this->watermark_pos = $pos; $this->watermark_trans = $trans; } /*---------------------------------------------------------------- Execute file Upload, finish processing returns an array of file information that contains uploaded successes or failures, Where: Name is the filename, upload success is uploaded to the server file name, upload failure is the local file name Dir holds the physical path for the attachment on the server, and the upload fails without the value Size is an attachment, upload failure does not exist this value Flag is Status ID, 1 indicates success,-1 indicates file type is not allowed,-2 indicates file size exceeds -----------------------------------------------------------------*/ function Execute () { $files = Array (); Successfully uploaded file information $field = $this->field; $keys = Array_keys ($_files[$field] [' name ']); foreach ($keys as $key) { if (!$_files[$field] [' name '] [$key]) continue; $fileext = $this->fileext ($_files[$field [' name '] [$key]); Get file name extension $filename = Date (' Ymdhis ', $this->time). Mt_rand (10,99). $fileext; Generate file name $filedir = $this->dir; Attachment Actual Storage Directory $filesize = $_files[$field] [' size '] [$key]; File size File type not allowed if (!in_array ($fileext, $this->allow_types)) { $files [$key] [' name '] = $_files[$field] [' name '] [$key]; $files [$key] [' flag '] =-1; Continue } File size exceeds if ($filesize > $this->maxsize) { $files [$key] [' name '] = $_files[$field] [' name '] [$key]; $files [$key] [' name '] = $filesize; $files [$key] [' flag '] =-2; Continue } $files [$key] [' name '] = $filename; $files [$key] [' dir '] = $filedir; $files [$key] [' size '] = $filesize; Save uploaded files and delete temporary files if (Is_uploaded_file ($_files[$field] [' tmp_name '] [$key])) { Move_uploaded_file ($_files[$field] [' tmp_name '] [$key], $filedir. $filename); @unlink ($_files[$field] [' tmp_name '] [$key]); $files [$key] [' flag '] = 1; Watermark and generate thumbnails for a picture if (In_array ($fileext, array (' jpg ', ' png ')) { if ($this->thumb_width) { if ($this->create_thumb ($filedir. $filename, $filedir. ' Thumb_ '. $filename)) { $files [$key] [' thumb '] = ' thumb_ '. $filename; Thumbnail file name } } $this->create_watermark ($filedir. $filename); } } } return $files; } Create thumbnails to generate thumbnails with the same extension $SRC _file: Source image path, $thumb _file: Thumbnail path function Create_thumb ($src _file, $thumb _file) { $t _width = $this->thumb_width; $t _height = $this->thumb_height; if (!file_exists ($src _file)) return false; $src _info = getimagesize ($src _file); Copy the source image as a thumbnail if the source image is less than or equal to the thumbnail if ($src _info[0] <= $t _width && $src _info[1] <= $t _height) { if (!copy ($src _file, $thumb _file)) { return false; } return true; } Calculate thumbnail size proportionally if ($src _info[0]-$t _width > $src _info[1]-$t _height) { $t _height = ($t _width/$src _info[0]) * $SRC _info[1]; } else { $t _width = ($t _height/$src _info[1]) * $SRC _info[0]; } Get file name extension $fileext = $this->fileext ($src _file); Switch ($fileext) { Case ' jpg ': $src _img = imagecreatefromjpeg ($src _file); Break Case ' PNG ': $src _img = imagecreatefrompng ($src _file); Break Case ' gif ': $src _img = imagecreatefromgif ($src _file); Break } Create a true-color thumbnail image $thumb _img = @ImageCreateTrueColor ($t _width, $t _height); imagecopyresampled function Copy of the image smoothness is better, the first consideration if (function_exists (' imagecopyresampled ')) { @ImageCopyResampled ($thumb _img, $src _img,0,0,0,0, $t _width, $t _height, $src _info[0], $src _info[1]); } else { @ImageCopyResized ($thumb _img, $src _img,0,0,0,0, $t _width, $t _height, $src _info[0], $src _info[1]); } Generate thumbnails Switch ($fileext) { Case ' jpg ': Imagejpeg ($thumb _img, $thumb _file); Break Case ' gif ': Imagegif ($thumb _img, $thumb _file); Break Case ' PNG ': Imagepng ($thumb _img, $thumb _file); Break } Destroying temporary images @ImageDestroy ($src _img); @ImageDestroy ($thumb _img); return true; } Add a watermark to a picture $file: Files to add a watermark function Create_watermark ($file) { Returns if the file does not exist if (!file_exists ($this->watermark_file) | | |!file_exists ($file)) return; if (!function_exists (' getimagesize ')) return; Check the file types supported by GD $GD _allow_types = Array (); if (function_exists (' imagecreatefromgif ')) $gd _allow_types[' image/gif '] = ' imagecreatefromgif '; if (function_exists (' imagecreatefrompng ')) $gd _allow_types[' image/png '] = ' imagecreatefrompng '; if (function_exists (' imagecreatefromjpeg ')) $gd _allow_types[' image/jpeg '] = ' imagecreatefromjpeg '; Get file information $fileinfo = getimagesize ($file); $wminfo = getimagesize ($this->watermark_file); if ($fileinfo [0] < $wminfo [0] | | | $fileinfo [1] < $wminfo [1]) return; if (array_key_exists ($fileinfo [' MIME '], $GD _allow_types)) { if (array_key_exists ($wminfo [' MIME '], $GD _allow_types)) { Create an image from a file $temp = $gd _allow_types[$fileinfo [' MIME ']] ($file); $temp _wm = $gd _allow_types[$wminfo [' MIME ']] ($this->watermark_file); Watermark Location Switch ($this->watermark_pos) { Case 1://Top Left $DST _x = 0; $DST _y = 0; Break Case 2://Top Center $DST _x = ($fileinfo [0]-$wminfo [0])/2; $DST _y = 0; Break Case 3://Top Right $DST _x = $fileinfo [0]; $DST _y = 0; Break Case 4://Bottom Left $DST _x = 0; $DST _y = $fileinfo [1]; Break Case 5://Bottom Center $DST _x = ($fileinfo [0]-$wminfo [0])/2; $DST _y = $fileinfo [1]; Break Case 6://Bottom Right $DST _x = $fileinfo [0]-$wminfo [0]; $DST _y = $fileinfo [1]-$wminfo [1]; Break Default://Random $DST _x = Mt_rand (0, $fileinfo [0]-$wminfo [0]); $DST _y = Mt_rand (0, $fileinfo [1]-$wminfo [1]); } if (function_exists (' imagealphablending ')) imagealphablending ($temp _wm,true); Set the blending mode of the image if (function_exists (' Imagesavealpha ')) Imagesavealpha ($temp _wm,true); To save full alpha channel information Add a watermark to an image if (function_exists (' Imagecopymerge ')) { Imagecopymerge ($temp, $temp _wm, $dst _x, $dst _y,0,0, $wminfo [0], $wminfo [1], $this->watermark_trans); } else { Imagecopymerge ($temp, $temp _wm, $dst _x, $dst _y,0,0, $wminfo [0], $wminfo [1]); } Save picture Switch ($fileinfo [' MIME ']) { Case ' Image/jpeg ': @imageJPEG ($temp, $file); Break Case ' image/png ': @imagePNG ($temp, $file); Break Case ' image/gif ': @imageGIF ($temp, $file); Break } Destroying zero images @imageDestroy ($temp); @imageDestroy ($temp _wm); } } } Get file name extension function Fileext ($filename) { Return Strtolower (substr strrchr ($filename, '. '), 1,10); } } |
|
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
