www.gusucode.com > Ectouch手机端网购商城系统PHP版源码程序 > ectouch/include/vendor/Image.class.php
<?php
/* 访问控制 */
defined('IN_ECTOUCH') or die('Deny Access');
/**
* 生成图像缩略图和生成验证码
*/
class Image {
/**
* 生成图像验证码
* @param type $width
* @param type $height
* @param type $randval
* @param type $verifyName
*/
static public function buildImageVerify($width = 48, $height = 22, $randval = NULL, $verifyName = 'ectouch_verify') {
if (!isset($_SESSION)) {
session_start(); //如果没有开启，session，则开启session
}
$chars = '23456789ABCDEFGHJKLMNPQRSTUVWXYZ';
for ($i = 0, $count = strlen($chars); $i < $count; $i++) {
$arr[$i] = $chars[$i];
}
mt_srand((double) microtime() * 1000000);
shuffle($arr);
$randval = empty($randval) ? ("" . substr(implode('', $arr), 5, 4)) : $randval;
$_SESSION[$verifyName] = $randval;
$length = 4;
$width = ($length * 10 + 10) > $width ? $length * 10 + 10 : $width;
$im = imagecreate($width, $height);
$r = array(225, 255, 255, 223);
$g = array(225, 236, 237, 255);
$b = array(225, 236, 166, 125);
$key = mt_rand(0, 3);
$backColor = imagecolorallocate($im, $r[$key], $g[$key], $b[$key]); //背景色（随机）
$borderColor = imagecolorallocate($im, 100, 100, 100); //边框色
$pointColor = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255)); //点颜色
@imagefilledrectangle($im, 0, 0, $width - 1, $height - 1, $backColor);
@imagerectangle($im, 0, 0, $width - 1, $height - 1, $borderColor);
$stringColor = imagecolorallocate($im, mt_rand(0, 200), mt_rand(0, 120), mt_rand(0, 120));
// 干扰
for ($i = 0; $i < 10; $i++) {
$fontcolor = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
imagearc($im, mt_rand(-10, $width), mt_rand(-10, $height), mt_rand(30, 300), mt_rand(20, 200), 55, 44, $fontcolor);
}
for ($i = 0; $i < 25; $i++) {
$fontcolor = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
imagesetpixel($im, mt_rand(0, $width), mt_rand(0, $height), $pointColor);
}
for ($i = 0; $i < $length; $i++) {
imagestring($im, 5, $i * 10 + 5, mt_rand(1, 8), $randval{$i}, $stringColor);
}
self::output($im, 'png');
}
/**
* 生成缩略图
* @param type $image
* @param type $thumbname
* @param type $domain
* @param type $maxWidth
* @param type $maxHeight
* @param type $interlace
* @return boolean
*/
static public function thumb($image, $thumbname, $domain = 'public', $maxWidth = 200, $maxHeight = 50, $interlace = true) {
// 获取原图信息
$info = self::getImageInfo($image);
if ($info !== false) {
$srcWidth = $info['width'];
$srcHeight = $info['height'];
$type = strtolower($info['type']);
$interlace = $interlace ? 1 : 0;
unset($info);
$scale = min($maxWidth / $srcWidth, $maxHeight / $srcHeight); // 计算缩放比例
if ($scale >= 1) { // 超过原图大小不再缩略
$width = $srcWidth;
$height = $srcHeight;
} else { // 缩略图尺寸
$width = (int) ($srcWidth * $scale);
$height = (int) ($srcHeight * $scale);
}
//sae平台上图片处理
if (class_exists('SaeStorage')) {
$saeStorage = new SaeStorage();
$saeImage = new SaeImage();
$saeImage->setData(file_get_contents($image));
$saeImage->resize($width, $height);
$thumbname = str_replace(array('../', './'), '', $thumbname);
return $saeStorage->write($domain, $thumbname, $saeImage->exec());
}
// 载入原图
$createFun = 'ImageCreateFrom' . ($type == 'jpg' ? 'jpeg' : $type);
$srcImg = $createFun($image);
//创建缩略图
if ($type != 'gif' && function_exists('imagecreatetruecolor')) {
$thumbImg = imagecreatetruecolor($width, $height);
} else {
$thumbImg = imagecreate($width, $height);
}
// 复制图片
if (function_exists("ImageCopyResampled")) {
imagecopyresampled($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight);
} else {
imagecopyresized($thumbImg, $srcImg, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight);
}
if ('gif' == $type || 'png' == $type) {
$background_color = imagecolorallocate($thumbImg, 0, 255, 0); // 指派一个绿色
imagecolortransparent($thumbImg, $background_color); // 设置为透明色，若注释掉该行则输出绿色的图
}
// 对jpeg图形设置隔行扫描
if ('jpg' == $type || 'jpeg' == $type) {
imageinterlace($thumbImg, $interlace);
}
$dir = dirname($thumbname);
if (!is_dir($dir)) {
@mkdir($dir, 0777, true);
}
// 生成图片
$imageFun = 'image' . ($type == 'jpg' ? 'jpeg' : $type);
$imageFun($thumbImg, $thumbname);
imagedestroy($thumbImg);
imagedestroy($srcImg);
return $thumbname;
}
return false;
}
/**
* 图片水印
* @$image 原图
* @$water 水印图片
* @$$waterPos 水印位置(0-9) 0为随机，其他代表上中下9个部分位置
*/
static public function water($image, $water, $waterPos = 9) {
//检查图片是否存在
if (!file_exists($image) || !file_exists($water))
return false;
//读取原图像文件
$imageInfo = self::getImageInfo($image);
$image_w = $imageInfo['width']; //取得水印图片的宽
$image_h = $imageInfo['height']; //取得水印图片的高
$imageFun = "imagecreatefrom" . $imageInfo['type'];
$image_im = $imageFun($image);
//读取水印文件
$waterInfo = self::getImageInfo($water);
$w = $water_w = $waterInfo['width']; //取得水印图片的宽
$h = $water_h = $waterInfo['height']; //取得水印图片的高
$waterFun = "imagecreatefrom" . $waterInfo['type'];
$water_im = $waterFun($water);
switch ($waterPos) {
case 0: //随机
$posX = rand(0, ($image_w - $w));
$posY = rand(0, ($image_h - $h));
break;
case 1: //1为顶端居左
$posX = 0;
$posY = 0;
break;
case 2: //2为顶端居中
$posX = ($image_w - $w) / 2;
$posY = 0;
break;
case 3: //3为顶端居右
$posX = $image_w - $w;
$posY = 0;
break;
case 4: //4为中部居左
$posX = 0;
$posY = ($image_h - $h) / 2;
break;
case 5: //5为中部居中
$posX = ($image_w - $w) / 2;
$posY = ($image_h - $h) / 2;
break;
case 6: //6为中部居右
$posX = $image_w - $w;
$posY = ($image_h - $h) / 2;
break;
case 7: //7为底端居左
$posX = 0;
$posY = $image_h - $h;
break;
case 8: //8为底端居中
$posX = ($image_w - $w) / 2;
$posY = $image_h - $h;
break;
case 9: //9为底端居右
$posX = $image_w - $w;
$posY = $image_h - $h;
break;
default: //随机
$posX = rand(0, ($image_w - $w));
$posY = rand(0, ($image_h - $h));
break;
}
//设定图像的混色模式
imagealphablending($image_im, true);
imagecopy($image_im, $water_im, $posX, $posY, 0, 0, $water_w, $water_h); //拷贝水印到目标文件
//生成水印后的图片
$bulitImg = "image" . $imageInfo['type'];
$bulitImg($image_im, $image);
//释放内存
$waterInfo = $imageInfo = null;
imagedestroy($image_im);
}
/**
* 返回图片信息
* @param type $img
* @return boolean
*/
static protected function getImageInfo($img) {
$imageInfo = getimagesize($img);
if ($imageInfo !== false) {
$imageType = strtolower(substr(image_type_to_extension($imageInfo[2]), 1));
$imageSize = filesize($img);
$info = array(
"width" => $imageInfo[0],
"height" => $imageInfo[1],
"type" => $imageType,
"size" => $imageSize,
"mime" => $imageInfo['mime']
);
return $info;
} else {
return false;
}
}
/**
* 图片输出
* @param type $im
* @param type $type
* @param type $filename
*/
static protected function output($im, $type = 'png', $filename = '') {
header("Content-type: image/" . $type);
$ImageFun = 'image' . $type;
if (empty($filename)) {
$ImageFun($im);
} else {
$ImageFun($im, $filename);
}
imagedestroy($im);
exit;
}
}
?>