php图片上传类
<?php
//引入config_app全局变量
include ini_get("yaf.library") ."/../config/application/global.php";
include ‘Image.php‘;
include ‘Aes.php‘;
//获取链接过来的参数
$format = isset($_GET[‘__format‘])?$_GET[‘__format‘]:"json";
switch($format) {
case ‘jsonp‘:
case ‘json‘ :
header("Content-Type:application/json;charset=UTF-8");
break;
case ‘html‘ :
header("Content-Type:text/html;charset=UTF-8");
break;
case ‘iframe‘ :
header("Content-Type:text/html;charset=UTF-8");
break;
default:
header("Content-Type:application/json;charset=UTF-8");
break;
}
if(!isset($_FILES[‘file‘]) || empty($_FILES[‘file‘])) {
$result = array(
"error_code" => 102,
"error_message" => "上传内容为空"
);
//die(json_encode($result));
returnData($format,$result);
exit;
}
//文件信息
$pic = $_FILES[‘file‘];
//分类名
$class = $_POST[‘class‘];
//强制文件名
$forcename = isset($_POST[‘forcename‘]) ? $_POST[‘forcename‘] : ‘‘;
//密钥
$authkey = isset($_POST[‘authkey‘]) ? $_POST[‘authkey‘] : ‘‘;
//允许的分类
$class_all = array(
"app", //APP 图片分享
"cms", //cms图片
"tmp", //临时文件
"yyk" //医院库图片
);
//检测上次类型
if(!in_array($class, $class_all)) {
$result = array(
"error_code" => 101,
"error_message" => "上传类型无效"
);
//die(json_encode($result));
returnData($format,$result);
exit;
}
//检测密钥
if($forcename !=‘‘ && defined(‘IMAGE_APP_AUTHKEY‘)) {
if($_POST[‘authkey‘] != md5(IMAGE_APP_AUTHKEY.$forcename)) {
$result = array(
"error_code" => 102,
"error_message" => "密钥不正确"
);
//die(json_encode($result));
returnData($format,$result);
exit;
}
}
$image = new Image();
$image->max_size = 8192;
$image->init($pic, $class, $forcename);
if(empty($image->file)) {
//上传失败
$result = array(
"error_code" => 100,
"error_message" => "文件上传失败"
);
//die(json_encode($result));
returnData($format,$result);
exit;
}
//保存图片
$image->save();
$image_url = IMAGE_COM.substr($image->file[‘local_target‘],9);
//设置回调
if(isset($_POST[‘callback‘])) {
$callback = Aes::decode($_POST[‘callback‘],IMAGE_APP_AUTHKEY);
if($callback) {
$callback = json_decode($callback,true);
if(isset($callback[‘uri‘])) {
$callback[‘params‘][‘image_url‘] = $image_url;
$gmclient= new GearmanClient();
$gmclient->addServer(CONFIG_GEARMAN_SERVER,CONFIG_GEARMAN_PORT);
$data = array(
‘Name‘ => ‘call_restful‘,
‘Args‘ => array(
$callback[‘uri‘],
http_build_query($callback[‘params‘]),
‘POST‘
)
);
$job_handle = $gmclient->doBackground("execphp", json_encode($data));
}
}
}
//上次成功
$result = array(
"error_code" => 0,
"data" => array(
"url" => $image_url
)
);
//die(json_encode($result));
returnData($format,$result);
exit;
//返回值方法
function returnData($type=‘json‘,$result) {
switch($type) {
case ‘jsonp‘:
echo "callback"."(".json_encode($data).")";
break;
case ‘json‘ :
echo json_encode($result);
break;
case ‘html‘ :
if(is_array($result)) {
print_r($result);
} else {
echo $result;
}
break;
case ‘iframe‘ :
echo "<script>document.domain = ‘", 域名,"‘;</script>";
echo "<textarea>", json_encode($result) , "</textarea>";
break;
default:
echo json_encode($result);
break;
}
}
<?php
/**
* image.class.php
*
* 图片上传类
*
*/
class Image
{
/**
* 文件信息
*/
var $file = array();
/**
* 保存目录
*/
var $dir = ‘public‘;
/**
* 错误代码
*/
var $error_code = 0;
/**
* 文件上传最大KB
*/
var $max_size = 8192;
function Image()
{
}
/**
* 处理上传文件
* @param array $file 上传的文件
* @param string $dir 保存的目录
* @return bool
*/
function init($file, $dir = ‘tmp‘, $forcename = ‘‘)
{
if(!is_array($file) || empty($file) || !$this->isUploadFile($file[‘tmp_name‘]) || trim($file[‘name‘]) == ‘‘ || $file[‘size‘] == 0) {
$this->file = array();
$this->error_code = -1;
return false;
} else {
$file[‘size‘] = intval($file[‘size‘]);
$file[‘name‘] = trim($file[‘name‘]);
$file[‘thumb‘] = ‘‘;
$file[‘ext‘] = $this->fileExt($file[‘name‘]);
$file[‘name‘] = htmlspecialchars($file[‘name‘], ENT_QUOTES);
$file[‘is_image‘] = $this->isImageExt($file[‘ext‘]);
$file[‘is_convert‘] = false;
$info = $this->getImageInfo($file[‘tmp_name‘]);
if($info[‘type‘] != ‘jpg‘ && $info[‘type‘] != ‘jpeg‘) {
$file[‘is_convert‘] = true;
}
$file[‘file_dir‘] = $this->getTargetDir($dir, $forcename);
$file[‘prefix‘] = $this->get_target_filename($dir, $forcename);
$file[‘target‘] = $file[‘file_dir‘].‘/‘.$file[‘prefix‘].‘.jpg‘;
$file[‘local_target‘] = $file[‘target‘];
$this->file = $file;
$this->error_code = 0;
return true;
}
}
/**
* 保存文件
* @return bool
*/
function save()
{
if(empty($this->file) || empty($this->file[‘tmp_name‘]))
$this->error_code = -101;
elseif(!$this->file[‘is_image‘])
$this->error_code = -102;
elseif(!$this->saveFile($this->file[‘tmp_name‘], $this->file[‘local_target‘],$this->file[‘is_convert‘]))
$this->error_code = -103;
elseif($this->file[‘is_image‘] && (!$this->file[‘image_info‘] = $this->getImageInfo($this->file[‘local_target‘], true)))
{
$this->error_code = -104;
@unlink($this->file[‘local_target‘]);
}
else
{
$this->error_code = 0;
return true;
}
return false;
}
/**
* 获取错误代码
* @return number
*/
function error()
{
return $this->error_code;
}
/**
* 获取文件扩展名
* @return string
*/
function fileExt($file_name)
{
return addslashes(strtolower(substr(strrchr($file_name, ‘.‘), 1, 10)));
}
/**
* 根据扩展名判断文件是否为图像
* @param string $ext 扩展名
* @return bool
*/
function isImageExt($ext)
{
static $img_ext = array(‘jpg‘, ‘jpeg‘, ‘png‘, ‘bmp‘, ‘gif‘, ‘giff‘);
return in_array($ext, $img_ext) ? 1 : 0;
}
/**
* 获取图像信息
* @param string $target 文件路径
* @return mixed
*/
function getImageInfo($target)
{
static $infos = array();
if(!isset($infos[$target]))
{
$infos[$target] = false;
$ext = Image::fileExt($target);
$is_image = Image::isImageExt($ext);
if(!$is_image && $ext != ‘tmp‘)
return false;
elseif(!is_readable($target))
return false;
elseif($image_info = @getimagesize($target))
{
$file_size = floatval(@filesize($target));
$file_size = $file_size / 1024;
if($file_size > $this->max_size)
return false;
list($width, $height, $type) = !empty($image_info) ? $image_info : array(‘‘, ‘‘, ‘‘);
if($is_image && !in_array($type, array(1,2,3,6,13)))
return false;
$image_info[‘type‘] = strtolower(substr(image_type_to_extension($image_info[2]),1));
$infos[$target] = $image_info;
return $image_info;
}
else
return false;
}
return $infos[$target];
}
/**
* 获取是否充许上传文件
* @param string $source 文件路径
* @return bool
*/
function isUploadFile($source)
{
return $source && ($source != ‘none‘) && (is_uploaded_file($source) || is_uploaded_file(str_replace(‘\\\\‘, ‘\\‘, $source)));
}
/**
* 获取保存的路径
* @param string $dir 指定的保存目录
* @return string
*/
function getTargetDir($dir, $forcename = ‘‘)
{
if($dir == ‘temp‘) {
$dir = ‘../public/temp/‘.date(‘Y/m/d/H‘);
} elseif($forcename != ‘‘) {
$forcedir = $this->formatforcename($forcename);
$dir = ‘../public/‘.$dir.‘/‘.$forcedir;
} else {
$dir = ‘../public/‘.$dir.‘/‘.date(‘Y/m/d‘);
}
if(!is_dir($dir))
mkdir($dir,0755,true);
return $dir;
}
//获取保存文件路径或文件名
function formatforcename($forcename, $type = ‘path‘) {
$result = ‘‘;
$tmp = explode(‘/‘, $forcename);
if(count($tmp) < 2) {
$tmp = array(
substr(md5($forcename), 0, 1),
substr(md5($forcename), 1, 1),
substr(md5($forcename), 2, 1),
$forcename
);
}
if($type == ‘path‘) {
unset($tmp[count($tmp)-1]);
$result = implode($tmp, ‘/‘);
} else {
$result = $tmp[count($tmp)-1];
}
return $result;
}
//获取文件名
function get_target_filename($dir, $forcename) {
if($forcename != ‘‘) {
$filename = $this->formatforcename($forcename, ‘name‘);
} else {
$filename = md5(microtime(true)).rand(100000,999999);
}
return $filename;
}
/**
* 保存文件
* @param string $source 源文件路径
* @param string $target 目录文件路径
* @return bool
*/
private function saveFile($source, $target,$is_convert = false)
{
if(!Image::isUploadFile($source))
$succeed = false;
elseif($is_convert && $this->convertType($source,$target))
$succeed = true;
elseif(@copy($source, $target))
$succeed = true;
elseif(function_exists(‘move_uploaded_file‘) && @move_uploaded_file($source, $target))
$succeed = true;
elseif (@is_readable($source) && (@$fp_s = fopen($source, ‘rb‘)) && (@$fp_t = fopen($target, ‘wb‘)))
{
while (!feof($fp_s))
{
$s = @fread($fp_s, 1024 * 512);
@fwrite($fp_t, $s);
}
fclose($fp_s);
fclose($fp_t);
$succeed = true;
}
if($succeed)
{
$this->error_code = 0;
@chmod($target, 0644);
@unlink($source);
}
else
{
$this->error_code = 0;
}
return $succeed;
}
public function convertType($source,$target)
{
$info = Image::getImageInfo($source);
if($info !== false)
{
$width = $info[0];
$height = $info[1];
$type = $info[‘type‘];
// 载入原图
$createFun = ‘imagecreatefrom‘.($type==‘jpg‘?‘jpeg‘:$type);
if(!function_exists($createFun))
$createFun = ‘imagecreatefromjpeg‘;
$srcImg = $createFun($source);
if(‘gif‘==$type || ‘png‘==$type)
{
$background_color = imagecolorallocate($srcImg,0,0,0);
imagecolortransparent($srcImg,$background_color);
}
// 对jpeg图形设置隔行扫描
if(‘jpg‘==$type || ‘jpeg‘==$type)
imageinterlace($srcImg,1);
// 生成图片
if(function_exists(‘imagefilter‘))
imagefilter($srcImg, IMG_FILTER_CONTRAST,-2);
if($source != $target)
{
imagejpeg($srcImg,$target,IMAGE_CREATE_QUALITY);
imagedestroy($srcImg);
}
else
{
$temp_path = substr($target,0,-4);
$temp_path .= ‘_temp.‘.substr($target,-3,3);
imagejpeg($srcImg,$temp_path,IMAGE_CREATE_QUALITY);
imagedestroy($srcImg);
@unlink($target);
$content = @file_get_contents($temp_path);
@file_put_contents($target,$content);
@unlink($temp_path);
}
return true;
}
return false;
}
public function thumb($image,$maxWidth=200,$maxHeight=50,$gen = 0,$interlace=true,$filepath = ‘‘)
{
$info = Image::getImageInfo($image);
if($info !== false)
{
$srcWidth = $info[0];
$srcHeight = $info[1];
$type = $info[‘type‘];
$interlace = $interlace? 1:0;
unset($info);
if($maxWidth > 0 && $maxHeight > 0)
{
//$scale = min($maxWidth/$srcWidth, $maxHeight/$srcHeight); // 计算缩放比例
//改为以宽度缩放
$scale = $maxWidth/$srcWidth;
}
elseif($maxWidth == 0)
$scale = $maxHeight/$srcHeight;
elseif($maxHeight == 0)
$scale = $maxWidth/$srcWidth;
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*$scale);
}
if($gen == 1)
{
$width = $maxWidth;
$height = $maxHeight;
}
elseif($gen == 2)
{
$height = $height > $maxHeight ? $maxHeight : $height;
}
$paths = pathinfo($image);
$ext = Image::fileExt($image);
if(empty($filepath))
$thumbname = str_replace(‘.‘.$paths[‘extension‘],‘‘,$image).‘_‘.$maxWidth.‘x‘.$maxHeight.‘.‘.$ext;
else
$thumbname = $filepath;
$thumburl = str_replace(FANWE_ROOT,‘‘,$thumbname);
// 载入原图
$createFun = ‘imagecreatefrom‘.($type==‘jpg‘?‘jpeg‘:$type);
if(!function_exists($createFun))
$createFun = ‘imagecreatefromjpeg‘;
$srcImg = $createFun($image);
//创建缩略图
if($type!=‘gif‘ && function_exists(‘imagecreatetruecolor‘))
$thumbImg = imagecreatetruecolor($width, $height);
else
$thumbImg = imagecreate($width, $height);
$x = 0;
$y = 0;
if($maxWidth > 0 && $maxHeight > 0)
{
if($gen == 1)
{
$resize_ratio = $maxWidth/$maxHeight;
$src_ratio = $srcWidth/$srcHeight;
if($src_ratio >= $resize_ratio)
{
$x = ($srcWidth - ($resize_ratio * $srcHeight)) / 2;
$width = ($height * $srcWidth) / $srcHeight;
}
else
{
$y = ($srcHeight - ( (1 / $resize_ratio) * $srcWidth)) / 2;
$height = ($width * $srcHeight) / $srcWidth;
}
}
}
// 复制图片
if(function_exists("imagecopyresampled"))
imagecopyresampled($thumbImg, $srcImg, 0, 0, $x, $y, $width, $height, $srcWidth,$srcHeight);
else
imagecopyresized($thumbImg, $srcImg, 0, 0, $x, $y, $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);
// 生成图片
if(function_exists(‘imagefilter‘))
imagefilter($thumbImg, IMG_FILTER_CONTRAST,-1);
// 保存图片
imagejpeg($thumbImg,$thumbname,IMAGE_CREATE_QUALITY);
imagedestroy($thumbImg);
imagedestroy($srcImg);
return array(‘url‘=>$thumburl,‘path‘=>$thumbname);
}
return false;
}
public function water($source,$water,$alpha=80,$position="4")
{
//检查文件是否存在
if(!file_exists($source)||!file_exists($water))
return false;
//图片信息
$sInfo = Image::getImageInfo($source);
$wInfo = Image::getImageInfo($water);
//如果图片小于水印图片，不生成图片
if($sInfo["0"] < $wInfo["0"] || $sInfo[‘1‘] < $wInfo[‘1‘])
return false;
//建立图像
$sCreateFun="imagecreatefrom".$sInfo[‘type‘];
if(!function_exists($sCreateFun))
$sCreateFun = ‘imagecreatefromjpeg‘;
$sImage=$sCreateFun($source);
$wCreateFun="imagecreatefrom".$wInfo[‘type‘];
if(!function_exists($wCreateFun))
$wCreateFun = ‘imagecreatefromjpeg‘;
$wImage=$wCreateFun($water);
//设定图像的混色模式
imagealphablending($wImage, true);
switch (intval($position))
{
case 0: break;
//左上
case 1:
$posY=0;
$posX=0;
//生成混合图像
imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);
break;
//右上
case 2:
$posY=0;
$posX=$sInfo[0]-$wInfo[0];
//生成混合图像
imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);
break;
//左下
case 3:
$posY=$sInfo[1]-$wInfo[1];
$posX=0;
//生成混合图像
imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);
break;
//右下
case 4:
$posY=$sInfo[1]-$wInfo[1];
$posX=$sInfo[0]-$wInfo[0];
//生成混合图像
imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);
break;
//居中
case 5:
$posY=$sInfo[1]/2-$wInfo[1]/2;
$posX=$sInfo[0]/2-$wInfo[0]/2;
//生成混合图像
imagecopymerge($sImage, $wImage, $posX, $posY, 0, 0, $wInfo[0],$wInfo[1],$alpha);
break;
}
//如果没有给出保存文件名，默认为原图像名
@unlink($source);
//保存图像
imagejpeg($sImage,$source,IMAGE_CREATE_QUALITY);
imagedestroy($sImage);
imagedestroy($wImage);
}
}
if(!function_exists(‘image_type_to_extension‘))
{
function image_type_to_extension($imagetype)
{
if(empty($imagetype))
return false;
switch($imagetype)
{
case IMAGETYPE_GIF : return ‘.gif‘;
case IMAGETYPE_JPEG : return ‘.jpeg‘;
case IMAGETYPE_PNG : return ‘.png‘;
case IMAGETYPE_SWF : return ‘.swf‘;
case IMAGETYPE_PSD : return ‘.psd‘;
case IMAGETYPE_BMP : return ‘.bmp‘;
case IMAGETYPE_TIFF_II : return ‘.tiff‘;
case IMAGETYPE_TIFF_MM : return ‘.tiff‘;
case IMAGETYPE_JPC : return ‘.jpc‘;
case IMAGETYPE_JP2 : return ‘.jp2‘;
case IMAGETYPE_JPX : return ‘.jpf‘;
case IMAGETYPE_JB2 : return ‘.jb2‘;
case IMAGETYPE_SWC : return ‘.swc‘;
case IMAGETYPE_IFF : return ‘.aiff‘;
case IMAGETYPE_WBMP : return ‘.wbmp‘;
case IMAGETYPE_XBM : return ‘.xbm‘;
default : return false;
}
}
}
?>
时间： 2024-11-10 01:10:08