自动生成微信公众号推送文封面图片完整显示图片比例尺寸
发布时间：2017-10-10, 11:12:37 分类：PHP | 编辑 off 网址 | 辅助
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微信公众号推送文图片封面会自动剪切，封面图片尺寸比例如果不是9:5会出现显示不完整，为方便不会使用图片编辑的客户能生成合适比例封面写了这个php代码功能，实现原理是在一张900*500的图片上加封面图片，就是图片水印，背景透明。<?
header("Content-type: image/png");
//原始图像
$dst = "a.png";
//实测900*500比例尺寸图片已不会出现裁剪图片边缘的问题，只需要发送多图文消息时注意标题文字是否会挡住图片内容即可。
$minx=900;
$miny=500;
//得到原始图片信息
$dst_im = imagecreatefrompng($dst);
$dst_info = getimagesize($dst);
//水印图像
$src = "b.jpg";
$src_im = imagecreatefromjpeg($src);
$src_info = getimagesize($src);
$nx=$src_info[0];
$ny=$src_info[1];
if($nx>$minx || $ny>$miny){
//获取大图信息
$maxx=$src_info[0];//宽
$maxy=$src_info[1];//长
$maxt=$src_info[2];//格式
$maxm=$src_info['mime'];//mime类型
//缩放判断
if(($minx/$maxx)>($miny/$maxy)){
$scale=$miny/$maxy;
}else{
$scale=$minx/$maxx;
}
//对所求值进行取整
$minx=floor($maxx*$scale);
$miny=floor($maxy*$scale);
//添加小图
$minim=imagecreatetruecolor($minx,$miny);
//缩放函数
imagecopyresampled($minim,$src_im,0,0,0,0,$minx,$miny,$maxx,$maxy);
//imagejpeg($minim);
$src_im=$minim;
$nx=$minx;
$ny=$miny;
}
//水印透明度
$alpha = 100;
$nwx=($dst_info[0]-$nx)/2;
$nwy=($dst_info[1]-$ny)/2;
//imagealphablending($dst_im , false);//关闭混合模式，以便透明颜色能覆盖原画板
//imagefill($image , 0 , 0 , $bg);//填充
imagesavealpha($dst_im , true);//设置保存PNG时保留透明通道信息
//合并水印图片
imagecopymerge($dst_im,$src_im,$nwx,$nwy,0,0,$nx,$ny,$alpha);
//输出合并后水印图片
imagepng($dst_im);
imagedestroy($dst_im);
imagedestroy($src_im);
?>Run code
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微信公众号推送文图片什么尺寸最佳？
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$dst = "./a.png"; $dst = "/a.png";群发推送图文封面，生成素材上传保存永久
<?php namespace Addons\Qunsend\Controller; use Home\Controller\AddonsController; class QunsendController extends AddonsController{ function sf(){ $id=I('get.id')+0; if(!$id){ echo 'no id'; exit; } $this->assign('id',$id); $this->assign('nconfig',$this->nconfig()); $this->display(); } function nconfig(){ return getAddonConfig ( 'WeiSite' ); } //预览 function qunfasyl(){ $id=I('get.id')+0; if(!$id){ echo 'no id'; exit; } $nconfig=$this->nconfig(); //echo $nconfig['bbyueyuesjttsyywxh'];exit; $access_token=get_access_token (); $s=M('qunsend')->where('id='.$id)->find(); $media_id=$s['media_id']; $url = 'https://api.weixin.qq.com/cgi-bin/message/mass/preview?access_token=' . $access_token; $paramStr .= '{"towxname":"'.$nconfig['bbyueyuesjttsyywxh'].'","mpnews":{"media_id":"'.$media_id.'"},"msgtype":"mpnews" }'; $res = post_data ( $url, $paramStr ); //dump($res['0']); if($res['0']!=0){ echo $res['errmsg']; exit; } $sav['qf']='已预览'; M('qunsend')->where('id='.$id)->save($sav); $this->assign('id',$id); $this->assign('nconfig',$this->nconfig()); $this->display(); //if($res['0']==0) echo '预览已经发送'; exit; } //推送 function qunfas(){ //exit; $id=I('get.id')+0; if(!$id){ echo 'no id'; exit; } $access_token=get_access_token (); $s=M('qunsend')->where('id='.$id)->find(); $media_id=$s['media_id']; $url = 'https://api.weixin.qq.com/cgi-bin/message/mass/sendall?access_token=' . $access_token; $paramStr .= '{"filter":{"is_to_all":true},"mpnews":{"media_id":"'.$media_id.'"},"msgtype":"mpnews","send_ignore_reprint":0}'; $res = post_data ( $url, $paramStr ); if($res['0']!=0){ echo $res['errmsg']; exit; } $sav['qf']='已经群发'; M('qunsend')->where('id='.$id)->save($sav); $this->assign('id',$id); $this->assign('nconfig',$this->nconfig()); $this->display(); //dump($res); exit; } function ass(){ //获取推送文章 qunsend $id=I('get.id')+0; if(!$id){ echo 'no id'; exit; } $access_token=get_access_token (); $contenttop='<p><img src="http://mmbiz.qpic.cn/mmbiz_gif/qbke2mSU58VnW25BcMnoDRqJUNULibduT7b7bBLnWcvxgWCgzpg17QRKcz8icj7vrCoHG9a6gfiabuZuOl5oeluBw/0"></p>'; $contentbottom='<p><img src="http://mmbiz.qpic.cn/mmbiz_gif/qbke2mSU58VnW25BcMnoDRqJUNULibduT6EiaeRoqKTA8ObByU69qNMnBibqYkjeWtThD1dUm8vAwoGuHlm6JsiaOA/0"></p>'; /*$p='\618-150429120J5.gif'; $res=$this->wximgup($p,$access_token,1); dump($res); exit;*/ $s=M('custom_reply_news')->where('id='.$id)->find(); //dump($s);exit; $content=$s['content']; preg_match_all("/\<img.*?src\=\"(.*?)\"[^>]*>/i", $content, $match); /*dump($match); exit;*/ //重新上传文中的图片链接 //$nimgurl=explode('<img src="',$s['content']); foreach($match['1'] as $k=>&$v){ $res=$this->wximgup($v,$access_token,1); $content=str_ireplace($v,$res['url'],$content); } /*dump($content); exit;*/ //$content=$s['content']; //$content=21321321;//str_ireplace('/Uploads/Editor/gh_c7d5c953c490/','http://ffzx.lizhenqiu.com/Uploads/Editor/gh_c7d5c953c490/',$content); //检查是否存在预推送文章 /*$cs=M('qunsend')->where('sid='.$id)->find(); if(empty($cs)){ }else{ exit; } //防止文章修改推送 改为使用最新 所以每次添加 */ if(!$s['cover']) $path='/111111.jpg'; else{ $path = get_cover ( $s['cover'] ); $path = $path['path']; } $nconfig=$this->nconfig(); //900*500比例尺寸 2017.10.10 if($nconfig['wxfmzdddd']){ $this->getnewjjfm($path); $path='/12345678980.jpg'; } //end //修复空封面bug $res=$this->wximgup($path,$access_token); //dump($res); //exit; $coverurl=$res['media_id']; //$content=$nimgurl;//$s['content']; //echo $content;exit; $articlesurl='https://api.weixin.qq.com/cgi-bin/media/uploadnews?access_token='.$access_token; $jsonArr = array( "articles"=> array( array( // 我就是少了这层array 才会报empty news data 错误 "title"=> $s['title'], "thumb_media_id"=> $coverurl, "author"=> 'XX170220', "digest"=> $s['intro'], "show_cover_pic"=> 0, "content"=> $contenttop.$content.$contentbottom, "content_source_url"=> 'http://ffzx.lizhenqiu.com/index.php?s=/addon/WeiSite/WeiSite/lastprice/sp/sp/id/'.$id.'.html', ) ) ); $json3=json_encode($jsonArr,JSON_UNESCAPED_UNICODE); $res=post_data ( $articlesurl, $json3, true ); $media_id=$res['media_id']; /*$url = 'https://api.weixin.qq.com/cgi-bin/message/mass/preview?access_token=' . $access_token; $paramStr .= '{"towxname":"iswtf_","mpnews":{"media_id":"'.$res['media_id'].'"},"msgtype":"mpnews" }'; $res = post_data ( $url, $paramStr );*/ //dump($res);exit; $acs['sid']=$id; $acs['title']=$s['title']; $acs['ctime']=time(); $acs['media_id']=$media_id; $acs['content']=$content; $acs['coverurl']=$coverurl; $cs=M('qunsend')->add($acs); echo $cs; //dump($s); exit; //echo 'fasd'; $url = 'https://api.weixin.qq.com/cgi-bin/message/mass/preview?access_token=' . $access_token; //$paramStr .= '{"filter":{"is_to_all":true},'; //$paramStr .= '"text":{"content":"' . '3432423423' . '"},"msgtype":"text"}'; $res=$this->get_image_media_id(740,$access_token); $paramStr .= '{"towxname":"iswtf_","mpnews":{"media_id":"'.$res['media_id'].'"},"msgtype":"mpnews" }'; $res = post_data ( $url, $paramStr ); dump($res); //$neww=$this->get_image_media_id(625); //dump($neww); //$this->display(); } //上传图片到微信 function wximgup($path,$access_token,$u){ $url='https://api.weixin.qq.com/cgi-bin/media/uploadimg'; if(!$u) $url='https://api.weixin.qq.com/cgi-bin/media/upload'; $param ['media'] = '@' . realpath(SITE_PATH . $path);// .'https://api.weixin.qq.com/cgi-bin/media/uploadimg?access_token='.$access_token; $param ['type'] = 'image'; //$param ['media'] = curl_file_create($path);// .'https://api.weixin.qq.com/cgi-bin/media/uploadimg?access_token='.$access_token); $param ['access_token'] = $access_token; return $res = post_data ( $url, $param, true ); } // 新增临时图片素材 function get_image_media_id($cover_id,$access_token) { $cover = get_cover ( $cover_id ); $path = $cover ['path']; /*echo get_access_token ();exit; $key = 'access_token_' . get_token (); echo S ( $key );exit;*/ /*$key = 'access_token_' . get_token (); S ( $key, 0, 7200 );*/ //echo realpath(SITE_PATH . $path);exit; //$access_token=get_access_token (); //$url='https://api.weixin.qq.com/cgi-bin/media/uploadimg'; $url='https://api.weixin.qq.com/cgi-bin/media/upload'; $param ['media'] = '@' . realpath(SITE_PATH . $path);// .'https://api.weixin.qq.com/cgi-bin/media/uploadimg?access_token='.$access_token; $param ['type'] = 'image'; //$param ['media'] = curl_file_create($path);// .'https://api.weixin.qq.com/cgi-bin/media/uploadimg?access_token='.$access_token); $param ['access_token'] = $access_token; return $res = post_data ( $url, $param, true ); //start $articlesurl='https://api.weixin.qq.com/cgi-bin/media/uploadnews?access_token='.$access_token; //$articlesparam ['access_token'] = $access_token; /*$articlesparam ['articles'][0]['thumb_media_id'] = $res['media_id']; $articlesparam ['articles'][0]['author'] = '3432423'; $articlesparam ['articles'][0]['title'] = 'Happy Day'; $articlesparam ['articles'][0]['content_source_url'] = 'www.qq.com'; $articlesparam ['articles'][0]['content'] = 'content'; $articlesparam ['articles'][0]['digest'] = 'digest'; $articlesparam ['articles'][0]['show_cover_pic'] = 1;*/ $jsonArr = array( "articles"=> array( array( // 我就是少了这层array 才会报empty news data 错误 "title"=> 'dingdingdemo', "thumb_media_id"=> $res['media_id'], "author"=> 'martin', "digest"=> 'digest', "show_cover_pic"=> 0, "content"=> $content, "content_source_url"=> 'https://www.baidu.com/', ) ) ); $json3=json_encode($jsonArr,JSON_UNESCAPED_UNICODE); return post_data ( $articlesurl, $json3, true ); //end return $res['media_id']; echo $path;exit; $driver = C ( 'PICTURE_UPLOAD_DRIVER' ); if ($driver != 'Local' && ! file_exists ( SITE_PATH . $cover ['path'] )) { // 先把图片下载到本地 $pathinfo = pathinfo ( SITE_PATH . $cover ['path'] ); mkdirs ( $pathinfo ['dirname'] ); $content = wp_file_get_contents ( $cover ['url'] ); $res = file_put_contents ( SITE_PATH . $cover ['path'], $content ); if (! $res) { return 0; } } $path = $cover ['path']; if (! $path) { return 0; } $param ['type'] = 'image'; $param ['media'] = '@' . realpath ( SITE_PATH . $path ); $url = 'https://api.weixin.qq.com/cgi-bin/media/upload?access_token=' . get_access_token (); $res = post_data ( $url, $param, true ); if (isset ( $res ['errcode'] ) && $res ['errcode'] != 0) { return $res; } return $res ['media_id']; } function getnewjjfm($src){ //原始图像 $dst = "./a.png"; //实测900*500比例尺寸图片已不会出现裁剪图片边缘的问题，只需要发送多图文消息时注意标题文字是否会挡住图片内容即可。 $minx=900; $miny=500; //得到原始图片信息 $dst_im = imagecreatefrompng($dst); $dst_info = getimagesize($dst); //水印图像 $src = ".".$src; $src_im = imagecreatefromjpeg($src); $src_info = getimagesize($src); $nx=$src_info[0]; $ny=$src_info[1]; if($nx>$minx || $ny>$miny){ //获取大图信息 $maxx=$src_info[0];//宽 $maxy=$src_info[1];//长 $maxt=$src_info[2];//格式 $maxm=$src_info['mime'];//mime类型 //缩放判断 if(($minx/$maxx)>($miny/$maxy)){ $scale=$miny/$maxy; }else{ $scale=$minx/$maxx; } //对所求值进行取整 $minx=floor($maxx*$scale); $miny=floor($maxy*$scale); //添加小图 $minim=imagecreatetruecolor($minx,$miny); //缩放函数 imagecopyresampled($minim,$src_im,0,0,0,0,$minx,$miny,$maxx,$maxy); //imagejpeg($minim); $src_im=$minim; $nx=$minx; $ny=$miny; } //水印透明度 $alpha = 100; $nwx=($dst_info[0]-$nx)/2; $nwy=($dst_info[1]-$ny)/2; //imagealphablending($dst_im , false);//关闭混合模式，以便透明颜色能覆盖原画板 //imagefill($image , 0 , 0 , $bg);//填充 imagesavealpha($dst_im , true);//设置保存PNG时保留透明通道信息 //合并水印图片 imagecopymerge($dst_im,$src_im,$nwx,$nwy,0,0,$nx,$ny,$alpha); //输出合并后水印图片 imagepng($dst_im,'./12345678980.jpg'); imagedestroy($dst_im); imagedestroy($src_im); } }转载地址：http://www.5idev.com/p-php_imagecopymerge.shtml
<? header("Content-type: image/jpeg"); //原始图像 $dst = "images/flower_1.jpg"; //得到原始图片信息 $dst_im = imagecreatefromjpeg($dst); $dst_info = getimagesize($dst); //水印图像 $src = "images/logo.gif"; $src_im = imagecreatefromgif($src); $src_info = getimagesize($src); //水印透明度 $alpha = 30; //合并水印图片 imagecopymerge($dst_im,$src_im,$dst_info[0]-$src_info[0],$dst_info[1]-$src_info[1],0,0,$src_info[0], $src_info[1],$alpha); //输出合并后水印图片 imagejpeg($dst_im); imagedestroy($dst_im); imagedestroy($src_im); ?>php 修改图片大小
<?php // 重置图片文件大小 function resize_image($filename, $tmpname, $xmax, $ymax) { $ext = explode(".", $filename); $ext = $ext[count($ext)-1]; if($ext == "jpg" || $ext == "jpeg") $im = imagecreatefromjpeg($tmpname); elseif($ext == "png") $im = imagecreatefrompng($tmpname); elseif($ext == "gif") $im = imagecreatefromgif($tmpname); $x = imagesx($im); $y = imagesy($im); if($x <= $xmax && $y <= $ymax) return $im; if($x >= $y) { $newx = $xmax; $newy = $newx * $y / $x; } else { $newy = $ymax; $newx = $x / $y * $newy; } $im2 = imagecreatetruecolor($newx, $newy); imagecopyresized($im2, $im, 0, 0, 0, 0, floor($newx), floor($newy), $x, $y); return $im2; } ?>PHP实例————图片等比例缩放功能
<?php function ImageShrink($imgfile,$minx,$miny){ //获取大图信息 $imgarr=getimagesize($imgfile); $maxx=$imgarr[0];//宽 $maxy=$imgarr[1];//长 $maxt=$imgarr[2];//格式 $maxm=$imgarr['mime'];//mime类型 //大图资源 $maxim=imagecreatefromjpeg($imgfile); //缩放判断 if(($minx/$maxx)>($miny/$maxy)){ $scale=$miny/$maxy; }else{ $scale=$minx/$maxx; } //对所求值进行取整 $minx=floor($maxx*$scale); $miny=floor($maxy*$scale); //添加小图 $minim=imagecreatetruecolor($minx,$miny); //缩放函数 imagecopyresampled($minim,$maxim,0,0,0,0,$minx,$miny,$maxx,$maxy); //小图输出 header("content-type:{$maxm}"); //判断图片类型 switch($maxt){ case 1: $imgout="imagegif"; break; case 2: $imgout="imagejpeg"; break; case 3: $imgout="imagepng"; break; } //变量函数 $imgout($minim,'copypic.jpg'); //释放资源 imagedestroy($maxim); imagedestroy($minim); } ImageShrink("picture/apple.jpg",50,50); ?>基本图片处理，用于完成图片缩入，水印添加,当水印图超过目标图片尺寸时，水印图能自动适应目标图片而缩小,水印图可以设置跟背景的合并度
<?php /** * 基本图片处理，用于完成图片缩入，水印添加 * 当水印图超过目标图片尺寸时，水印图能自动适应目标图片而缩小 * 水印图可以设置跟背景的合并度 * * Copyright(c) 2005 by ustb99. All rights reserved * * To contact the author write to {@link mailto:ustb80@163.com} * * @author 偶然 * @version $Id: thumb.class.php,v 1.9 2006/09/30 09:31:56 zengjian Exp $ * @package system */ /** * ThumbHandler * @access public */ /* 使用方法: 自动裁切: 程序会按照图片的尺寸从中部裁切最大的正方形，并按目标尺寸进行缩略 $t->setSrcImg("img/test.jpg"); $t->setCutType(1);//这一句就OK了 $t->setDstImg("tmp/new_test.jpg"); $t->createImg(60,60); 手工裁切: 程序会按照指定的位置从源图上取图 $t->setSrcImg("img/test.jpg"); $t->setCutType(2);//指明为手工裁切 $t->setSrcCutPosition(100, 100);// 源图起点坐标 $t->setRectangleCut(300, 200);// 裁切尺寸 $t->setDstImg("tmp/new_test.jpg"); $t->createImg(300,200); */ class ThumbHandler { var $dst_img;// 目标文件 var $h_src; // 图片资源句柄 var $h_dst;// 新图句柄 var $h_mask;// 水印句柄 var $img_create_quality = 100;// 图片生成质量 var $img_display_quality = 80;// 图片显示质量,默认为75 var $img_scale = 0;// 图片缩放比例 var $src_w = 0;// 原图宽度 var $src_h = 0;// 原图高度 var $dst_w = 0;// 新图总宽度 var $dst_h = 0;// 新图总高度 var $fill_w;// 填充图形宽 var $fill_h;// 填充图形高 var $copy_w;// 拷贝图形宽 var $copy_h;// 拷贝图形高 var $src_x = 0;// 原图绘制起始横坐标 var $src_y = 0;// 原图绘制起始纵坐标 var $start_x;// 新图绘制起始横坐标 var $start_y;// 新图绘制起始纵坐标 var $mask_word;// 水印文字 var $mask_img;// 水印图片 var $mask_pos_x = 0;// 水印横坐标 var $mask_pos_y = 0;// 水印纵坐标 var $mask_offset_x = 5;// 水印横向偏移 var $mask_offset_y = 5;// 水印纵向偏移 var $font_w;// 水印字体宽 var $font_h;// 水印字体高 var $mask_w;// 水印宽 var $mask_h;// 水印高 var $mask_font_color = "#ffffff";// 水印文字颜色 var $mask_font = 2;// 水印字体 var $font_size;// 尺寸 var $mask_position = 0;// 水印位置 var $mask_img_pct = 50;// 图片合并程度,值越大，合并程序越低 var $mask_txt_pct = 50;// 文字合并程度,值越小，合并程序越低 var $img_border_size = 0;// 图片边框尺寸 var $img_border_color;// 图片边框颜色 var $_flip_x=0;// 水平翻转次数 var $_flip_y=0;// 垂直翻转次数 var $cut_type=0;// 剪切类型 var $img_type;// 文件类型 // 文件类型定义,并指出了输出图片的函数 var $all_type = array( "jpg" => array("output"=>"imagejpeg"), "gif" => array("output"=>"imagegif"), "png" => array("output"=>"imagepng"), "wbmp" => array("output"=>"image2wbmp"), "jpeg" => array("output"=>"imagejpeg")); /** * 构造函数 */ function ThumbHandler() { $this->mask_font_color = "#ffffff"; $this->font = 2; $this->font_size = 12; } /** * 取得图片的宽 */ function getImgWidth($src) { return imagesx($src); } /** * 取得图片的高 */ function getImgHeight($src) { return imagesy($src); } /** * 设置图片生成路径 * * @param string $src_img 图片生成路径 */ function setSrcImg($src_img, $img_type=null) { if(!file_exists($src_img)) { die("图片不存在"); } if(!emptyempty($img_type)) { $this->img_type = $img_type; } else { $this->img_type = $this->_getImgType($src_img); } $this->_checkValid($this->img_type); // file_get_contents函数要求php版本>4.3.0 $src = ''; if(function_exists("file_get_contents")) { $src = file_get_contents($src_img); } else { $handle = fopen ($src_img, "r"); while (!feof ($handle)) { $src .= fgets($fd, 4096); } fclose ($handle); } if(emptyempty($src)) { die("图片源为空"); } $this->h_src = @ImageCreateFromString($src); $this->src_w = $this->getImgWidth($this->h_src); $this->src_h = $this->getImgHeight($this->h_src); } /** * 设置图片生成路径 * * @param string $dst_img 图片生成路径 */ function setDstImg($dst_img) { $arr = explode('/',$dst_img); $last = array_pop($arr); $path = implode('/',$arr); $this->_mkdirs($path); $this->dst_img = $dst_img; } /** * 设置图片的显示质量 * * @param string $n 质量 */ function setImgDisplayQuality($n) { $this->img_display_quality = (int)$n; } /** * 设置图片的生成质量 * * @param string $n 质量 */ function setImgCreateQuality($n) { $this->img_create_quality = (int)$n; } /** * 设置文字水印 * * @param string $word 水印文字 * @param integer $font 水印字体 * @param string $color 水印字体颜色 */ function setMaskWord($word) { $this->mask_word .= $word; } /** * 设置字体颜色 * * @param string $color 字体颜色 */ function setMaskFontColor($color="#ffffff") { $this->mask_font_color = $color; } /** * 设置水印字体 * * @param string|integer $font 字体 */ function setMaskFont($font=2) { if(!is_numeric($font) && !file_exists($font)) { die("字体文件不存在"); } $this->font = $font; } /** * 设置文字字体大小,仅对truetype字体有效 */ function setMaskFontSize($size = "12") { $this->font_size = $size; } /** * 设置图片水印 * * @param string $img 水印图片源 */ function setMaskImg($img) { $this->mask_img = $img; } /** * 设置水印横向偏移 * * @param integer $x 横向偏移量 */ function setMaskOffsetX($x) { $this->mask_offset_x = (int)$x; } /** * 设置水印纵向偏移 * * @param integer $y 纵向偏移量 */ function setMaskOffsetY($y) { $this->mask_offset_y = (int)$y; } /** * 指定水印位置 * * @param integer $position 位置,1:左上,2:左下,3:右上,0/4:右下 */ function setMaskPosition($position=0) { $this->mask_position = (int)$position; } /** * 设置图片合并程度 * * @param integer $n 合并程度 */ function setMaskImgPct($n) { $this->mask_img_pct = (int)$n; } /** * 设置文字合并程度 * * @param integer $n 合并程度 */ function setMaskTxtPct($n) { $this->mask_txt_pct = (int)$n; } /** * 设置缩略图边框 * * @param (类型) (参数名) (描述) */ function setDstImgBorder($size=1, $color="#000000") { $this->img_border_size = (int)$size; $this->img_border_color = $color; } /** * 水平翻转 */ function flipH() { $this->_flip_x++; } /** * 垂直翻转 */ function flipV() { $this->_flip_y++; } /** * 设置剪切类型 * * @param (类型) (参数名) (描述) */ function setCutType($type) { $this->cut_type = (int)$type; } /** * 设置图片剪切 * * @param integer $width 矩形剪切 */ function setRectangleCut($width, $height) { $this->fill_w = (int)$width; $this->fill_h = (int)$height; } /** * 设置源图剪切起始坐标点 * * @param (类型) (参数名) (描述) */ function setSrcCutPosition($x, $y) { $this->src_x = (int)$x; $this->src_y = (int)$y; } /** * 创建图片,主函数 * @param integer $a 当缺少第二个参数时，此参数将用作百分比， * 否则作为宽度值 * @param integer $b 图片缩放后的高度 */ function createImg($a, $b=null) { $num = func_num_args(); if(1 == $num) { $r = (int)$a; if($r < 1) { die("图片缩放比例不得小于1"); } $this->img_scale = $r; $this->_setNewImgSize($r); } if(2 == $num) { $w = (int)$a; $h = (int)$b; if(0 == $w) { die("目标宽度不能为0"); } if(0 == $h) { die("目标高度不能为0"); } $this->_setNewImgSize($w, $h); } if($this->_flip_x%2!=0) { $this->_flipH($this->h_src); } if($this->_flip_y%2!=0) { $this->_flipV($this->h_src); } $this->_createMask(); $this->_output(); // 释放 if(imagedestroy($this->h_src) && imagedestroy($this->h_dst)) { Return true; } else { Return false; } } /** * 生成水印,调用了生成水印文字和水印图片两个方法 */ function _createMask() { if($this->mask_word) { // 获取字体信息 $this->_setFontInfo(); if($this->_isFull()) { die("水印文字过大"); } else { $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h); $white = ImageColorAllocate($this->h_dst,255,255,255); imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色 $this->_drawBorder(); imagecopyresampled( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h); $this->_createMaskWord($this->h_dst); } } if($this->mask_img) { $this->_loadMaskImg();//加载时，取得宽高 if($this->_isFull()) { // 将水印生成在原图上再拷 $this->_createMaskImg($this->h_src); $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h); $white = ImageColorAllocate($this->h_dst,255,255,255); imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色 $this->_drawBorder(); imagecopyresampled( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->start_y, $this->copy_w, $this->copy_h); } else { // 创建新图并拷贝 $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h); $white = ImageColorAllocate($this->h_dst,255,255,255); imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色 $this->_drawBorder(); imagecopyresampled( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h); $this->_createMaskImg($this->h_dst); } } if(emptyempty($this->mask_word) && emptyempty($this->mask_img)) { $this->h_dst = imagecreatetruecolor($this->dst_w, $this->dst_h); $white = ImageColorAllocate($this->h_dst,255,255,255); imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$white);// 填充背景色 $this->_drawBorder(); imagecopyresampled( $this->h_dst, $this->h_src, $this->start_x, $this->start_y, $this->src_x, $this->src_y, $this->fill_w, $this->fill_h, $this->copy_w, $this->copy_h); } } /** * 画边框 */ function _drawBorder() { if(!emptyempty($this->img_border_size)) { $c = $this->_parseColor($this->img_border_color); $color = ImageColorAllocate($this->h_src,$c[0], $c[1], $c[2]); imagefilledrectangle($this->h_dst,0,0,$this->dst_w,$this->dst_h,$color);// 填充背景色 } } /** * 生成水印文字 */ function _createMaskWord($src) { $this->_countMaskPos(); $this->_checkMaskValid(); $c = $this->_parseColor($this->mask_font_color); $color = imagecolorallocatealpha($src, $c[0], $c[1], $c[2], $this->mask_txt_pct); if(is_numeric($this->font)) { imagestring($src, $this->font, $this->mask_pos_x, $this->mask_pos_y, $this->mask_word, $color); } else { imagettftext($src, $this->font_size, 0, $this->mask_pos_x, $this->mask_pos_y, $color, $this->font, $this->mask_word); } } /** * 生成水印图 */ function _createMaskImg($src) { $this->_countMaskPos(); $this->_checkMaskValid(); imagecopymerge($src, $this->h_mask, $this->mask_pos_x ,$this->mask_pos_y, 0, 0, $this->mask_w, $this->mask_h, $this->mask_img_pct); imagedestroy($this->h_mask); } /** * 加载水印图 */ function _loadMaskImg() { $mask_type = $this->_getImgType($this->mask_img); $this->_checkValid($mask_type); // file_get_contents函数要求php版本>4.3.0 $src = ''; if(function_exists("file_get_contents")) { $src = file_get_contents($this->mask_img); } else { $handle = fopen ($this->mask_img, "r"); while (!feof ($handle)) { $src .= fgets($fd, 4096); } fclose ($handle); } if(emptyempty($this->mask_img)) { die("水印图片为空"); } $this->h_mask = ImageCreateFromString($src); $this->mask_w = $this->getImgWidth($this->h_mask); $this->mask_h = $this->getImgHeight($this->h_mask); } /** * 图片输出 */ function _output() { $img_type = $this->img_type; $func_name = $this->all_type[$img_type]['output']; if(function_exists($func_name)) { // 判断浏览器,若是IE就不发送头 if(isset($_SERVER['HTTP_USER_AGENT'])) { $ua = strtoupper($_SERVER['HTTP_USER_AGENT']); if(!preg_match('/^.*MSIE.*\)$/i',$ua)) { header("Content-type:$img_type"); } } $func_name($this->h_dst, $this->dst_img, $this->img_display_quality); } else { Return false; } } /** * 分析颜色 * * @param string $color 十六进制颜色 */ function _parseColor($color) { $arr = array(); for($ii=1; $ii<strlen ($color); $ii++) { $arr[] = hexdec(substr($color,$ii,2)); $ii++; } Return $arr; } /** * 计算出位置坐标 */ function _countMaskPos() { if($this->_isFull()) { switch($this->mask_position) { case 1: // 左上 $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size; $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size; break; case 2: // 左下 $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size; $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y; break; case 3: // 右上 $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x; $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size; break; case 4: // 右下 $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x; $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y; break; default: // 默认将水印放到右下,偏移指定像素 $this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x; $this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y; break; } } else { switch($this->mask_position) { case 1: // 左上 $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size; $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size; break; case 2: // 左下 $this->mask_pos_x = $this->mask_offset_x + $this->img_border_size; $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size; break; case 3: // 右上 $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size; $this->mask_pos_y = $this->mask_offset_y + $this->img_border_size; break; case 4: // 右下 $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size; $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size; break; default: // 默认将水印放到右下,偏移指定像素 $this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size; $this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size; break; } } } /** * 设置字体信息 */ function _setFontInfo() { if(is_numeric($this->font)) { $this->font_w = imagefontwidth($this->font); $this->font_h = imagefontheight($this->font); // 计算水印字体所占宽高 $word_length = strlen($this->mask_word); $this->mask_w = $this->font_w*$word_length; $this->mask_h = $this->font_h; } else { $arr = imagettfbbox ($this->font_size,0, $this->font,$this->mask_word); $this->mask_w = abs($arr[0] - $arr[2]); $this->mask_h = abs($arr[7] - $arr[1]); } } /** * 设置新图尺寸 * * @param integer $img_w 目标宽度 * @param integer $img_h 目标高度 */ function _setNewImgSize($img_w, $img_h=null) { $num = func_num_args(); if(1 == $num) { $this->img_scale = $img_w;// 宽度作为比例 $this->fill_w = round($this->src_w * $this->img_scale / 100) - $this->img_border_size*2; $this->fill_h = round($this->src_h * $this->img_scale / 100) - $this->img_border_size*2; // 源文件起始坐标 $this->src_x = 0; $this->src_y = 0; $this->copy_w = $this->src_w; $this->copy_h = $this->src_h; // 目标尺寸 $this->dst_w = $this->fill_w + $this->img_border_size*2; $this->dst_h = $this->fill_h + $this->img_border_size*2; } if(2 == $num) { $fill_w = (int)$img_w - $this->img_border_size*2; $fill_h = (int)$img_h - $this->img_border_size*2; if($fill_w < 0 || $fill_h < 0) { die("图片边框过大，已超过了图片的宽度"); } $rate_w = $this->src_w/$fill_w; $rate_h = $this->src_h/$fill_h; switch($this->cut_type) { case 0: // 如果原图大于缩略图，产生缩小，否则不缩小 if($rate_w < 1 && $rate_h < 1) { $this->fill_w = (int)$this->src_w; $this->fill_h = (int)$this->src_h; } else { if($rate_w >= $rate_h) { $this->fill_w = (int)$fill_w; $this->fill_h = round($this->src_h/$rate_w); } else { $this->fill_w = round($this->src_w/$rate_h); $this->fill_h = (int)$fill_h; } } $this->src_x = 0; $this->src_y = 0; $this->copy_w = $this->src_w; $this->copy_h = $this->src_h; // 目标尺寸 $this->dst_w = $this->fill_w + $this->img_border_size*2; $this->dst_h = $this->fill_h + $this->img_border_size*2; break; // 自动裁切 case 1: // 如果图片是缩小剪切才进行操作 if($rate_w >= 1 && $rate_h >=1) { if($this->src_w > $this->src_h) { $src_x = round($this->src_w-$this->src_h)/2; $this->setSrcCutPosition($src_x, 0); $this->setRectangleCut($fill_h, $fill_h); $this->copy_w = $this->src_h; $this->copy_h = $this->src_h; } elseif($this->src_w < $this->src_h) { $src_y = round($this->src_h-$this->src_w)/2; $this->setSrcCutPosition(0, $src_y); $this->setRectangleCut($fill_w, $fill_h); $this->copy_w = $this->src_w; $this->copy_h = $this->src_w; } else { $this->setSrcCutPosition(0, 0); $this->copy_w = $this->src_w; $this->copy_h = $this->src_w; $this->setRectangleCut($fill_w, $fill_h); } } else { $this->setSrcCutPosition(0, 0); $this->setRectangleCut($this->src_w, $this->src_h); $this->copy_w = $this->src_w; $this->copy_h = $this->src_h; } // 目标尺寸 $this->dst_w = $this->fill_w + $this->img_border_size*2; $this->dst_h = $this->fill_h + $this->img_border_size*2; break; // 手工裁切 case 2: $this->copy_w = $this->fill_w; $this->copy_h = $this->fill_h; // 目标尺寸 $this->dst_w = $this->fill_w + $this->img_border_size*2; $this->dst_h = $this->fill_h + $this->img_border_size*2; break; default: break; } } // 目标文件起始坐标 $this->start_x = $this->img_border_size; $this->start_y = $this->img_border_size; } /** * 检查水印图是否大于生成后的图片宽高 */ function _isFull() { Return ( $this->mask_w + $this->mask_offset_x > $this->fill_w || $this->mask_h + $this->mask_offset_y > $this->fill_h) ?true:false; } /** * 检查水印图是否超过原图 */ function _checkMaskValid() { if( $this->mask_w + $this->mask_offset_x > $this->src_w || $this->mask_h + $this->mask_offset_y > $this->src_h) { die("水印图片尺寸大于原图，请缩小水印图"); } } /** * 取得图片类型 * * @param string $file_path 文件路径 */ function _getImgType($file_path) { $type_list = array("1"=>"gif","2"=>"jpg","3"=>"png","4"=>"swf","5" => "psd","6"=>"bmp","15"=>"wbmp"); if(file_exists($file_path)) { $img_info = @getimagesize ($file_path); if(isset($type_list[$img_info[2]])) { Return $type_list[$img_info[2]]; } } else { die("文件不存在,不能取得文件类型!"); } } /** * 检查图片类型是否合法,调用了array_key_exists函数，此函数要求 * php版本大于4.1.0 * * @param string $img_type 文件类型 */ function _checkValid($img_type) { if(!array_key_exists($img_type, $this->all_type)) { Return false; } } /** * 按指定路径生成目录 * * @param string $path 路径 */ function _mkdirs($path) { $adir = explode('/',$path); $dirlist = ''; $rootdir = array_shift($adir); if(($rootdir!='.'||$rootdir!='..')&&!file_exists($rootdir)) { @mkdir($rootdir); } foreach($adir as $key=>$val) { if($val!='.'&&$val!='..') { $dirlist .= "/".$val; $dirpath = $rootdir.$dirlist; if(!file_exists($dirpath)) { @mkdir($dirpath); @chmod($dirpath,0777); } } } } /** * 垂直翻转 * * @param string $src 图片源 */ function _flipV($src) { $src_x = $this->getImgWidth($src); $src_y = $this->getImgHeight($src); $new_im = imagecreatetruecolor($src_x, $src_y); for ($y = 0; $y < $src_y; $y++) { imagecopy($new_im, $src, 0, $src_y - $y - 1, 0, $y, $src_x, 1); } $this->h_src = $new_im; } /** * 水平翻转 * * @param string $src 图片源 */ function _flipH($src) { $src_x = $this->getImgWidth($src); $src_y = $this->getImgHeight($src); $new_im = imagecreatetruecolor($src_x, $src_y); for ($x = 0; $x < $src_x; $x++) { imagecopy($new_im, $src, $src_x - $x - 1, 0, $x, 0, 1, $src_y); } $this->h_src = $new_im; } } 使用实例: < ?php require_once('lib/thumb.class.php'); $t = new ThumbHandler(); $t->setSrcImg("img/test.jpg"); $t->setDstImg("tmp/new_test.jpg"); $t->setMaskImg("img/test.gif"); $t->setMaskPosition(1); $t->setMaskImgPct(80); $t->setDstImgBorder(4,"#dddddd"); // 指定缩放比例 $t->createImg(300,200); ?> <?php require_once('lib/thumb.class.php'); $t = new ThumbHandler(); // 基本使用 $t->setSrcImg("img/test.jpg"); $t->setMaskWord("test"); $t->setDstImgBorder(10,"#dddddd"); // 指定缩放比例 $t->createImg(50); ?> <?php equire_once('lib/thumb.class.php'); $t = new ThumbHandler(); // 基本使用 $t->setSrcImg("img/test.jpg"); $t->setMaskWord("test"); // 指定固定宽高 $t->createImg(200,200); ?> <?php require_once('lib/thumb.class.php'); $t = new ThumbHandler(); $t->setSrcImg("img/test.jpg"); $t->setDstImg("tmp/new_test.jpg"); $t->setMaskWord("test"); // 指定固定宽高 $t->createImg(200,200); ?> <?php require_once('lib/thumb.class.php'); $t = new ThumbHandler(); $t->setSrcImg("img/test.jpg"); // 指定字体文件地址 $t->setMaskFont("c:/winnt/fonts/arial.ttf"); $t->setMaskFontSize(20); $t->setMaskFontColor("#ffff00"); $t->setMaskWord("test3333333"); $t->setDstImgBorder(99,"#dddddd"); $t->createImg(50); ?> <?php require_once('lib/thumb.class.php'); $t = new ThumbHandler(); $t->setSrcImg("img/test.jpg"); $t->setMaskOffsetX(55); $t->setMaskOffsetY(55); $t->setMaskPosition(1); //$t->setMaskPosition(2); //$t->setMaskPosition(3); //$t->setMaskPosition(4); $t->setMaskFontColor("#ffff00"); $t->setMaskWord("test"); // 指定固定宽高 $t->createImg(50); ?> <?php require_once('lib/thumb.class.php'); $t = new ThumbHandler(); $t->setSrcImg("img/test.jpg"); $t->setMaskFont("c:/winnt/fonts/simyou.ttf"); $t->setMaskFontSize(20); $t->setMaskFontColor("#ffffff"); $t->setMaskTxtPct(20); $t->setDstImgBorder(10,"#dddddd"); $text = "中文"; $str = mb_convert_encoding($text, "UTF-8", "gb2312"); $t->setMaskWord($str); $t->setMaskWord("test"); // 指定固定宽高 $t->createImg(50);