www.gusucode.com > wxApp PHP版微信小程序CMS系统 v1.0PHP源码程序 > wxApp PHP版微信小程序CMS系统 v1.0/wxAppCMS_v1.0.0/wxAppCMS_v1.0.0/iPHP/core/iThumb.class.php
<?php
/**
* iPHP - i PHP Framework
* Copyright (c) iiiPHP.com. All rights reserved.
*
* @author iPHPDev <master@iiiphp.com>
* @website http://www.iiiphp.com
* @license http://www.iiiphp.com/license
* @version 2.1.0
*/
/**
* 缩略图生成程序
*/
class iThumb {
public static $RES_PATH = null;
public static $RES_CACHE_TIME = null;
public static $RES_CACHE_DIR = null;
public static $src_data = null;
public static $thumb_path = null;
protected static $cache_dir = null;
/**
* 显示缩略图
*/
public static function create(){
$expires = 31536000;
header("Cache-Control: maxage=".$expires);
header('Last-Modified: '.gmdate('D, d M Y H:i:s',$_SERVER['REQUEST_TIME']).' GMT');
header('Expires: '.gmdate('D, d M Y H:i:s',$_SERVER['REQUEST_TIME']+$expires).' GMT');
header('Content-type: image/jpeg');
echo self::$src_data;
self::finish();
}
/**
* 生成缩略图
* @param [type] $path [原图路径]
* @param integer $tw [缩略图宽度]
* @param integer $th [缩略图高度]
* @return [image] [缩略图资源]
*/
public static function make($path,$tw=1,$th=1){
strpos($path,'..') === false OR trigger_error('What are you doing?',E_USER_ERROR);
$srcPath = self::$RES_PATH.$path;
$thumb_path = $srcPath.'_'.$tw.'x'.$th.'.jpg';
if (empty($path)||!self::exists($srcPath))
return self::blank();
iPHP_RES_CACHE && self::$src_data = self::cache($thumb_path,'get');
if(empty(self::$src_data)){
$gmagick = new Gmagick();
$gmagick->readImage($srcPath);
$scale = array(
"tw" => $tw,
"th" => $th,
"w" => $gmagick->getImageWidth(),
"h" => $gmagick->getImageHeight()
);
if($tw>0 && $th>0){
$im = self::scale($scale);
$gmagick->resizeImage($im['w'],$im['h'], null, 1);
$x = $y = 0;
$im['w']>$im['tw'] && $x = ceil(($im['w']-$im['tw'])/3);
$im['h']>$im['th'] && $y = ceil(($im['h']-$im['th'])/3);
$gmagick->cropImage($tw,$th,$x,$y);
}else{
empty($scale['th']) && $scale['th']=9999999;
$im = self::bitScale($scale);
$gmagick->resizeImage($im['w'],$im['h'], null, 1);
}
header('X-Thumb-Cache: MAKE-'.$_SERVER['REQUEST_TIME']);
self::$src_data = $gmagick->current();
iPHP_RES_CACHE && self::cache($thumb_path,self::$src_data);
}
}
/**
* 生成无图标志
* @return [type] [description]
*/
private static function blank(){
//1x1.gif
$src_data = 'R0lGODlhAQABAIAAAAAAAP///yH5BAEHAAEALAAAAAABAAEAAAICTAEAOw==';
//nopic.gif
$src_data = 'R0lGODlhyADIAKIAAMzMzP///+bm5vb29tXV1d3d3e7u7gAAACH5BAAHAP8ALAAAAADIAMgAAAP/
SLrc/jDKSau9OOs9g/9gKI5kaZ5oqq5s676kAs90bd94bsp67//AoIonLBqPSBYxyWw6g8undEpVEqrYrBYU3Xq/
xy54TM6Jy+h066xuu0fst9wdn9vL9bvem9/7q31/gk6Bg4ZhV4eKVIWLjjqNj5I1kZOWLpWXmimZm54xiZ+iM52j
o6Wmn6ipm6usl66vk7Gyj7S1i7e4h7q7g72+f8DBe8PEd8bHc8nKb8zNbc/QadLTeKHWp9jZqtvcrd7fsOHis+Tl
tufouerrvO3uv/DxwvM9Avj5+vv8/f7/AAMKHEjwHyF7OgSgU9ikWgiG4iAmcQhCIjeLiJxgtLax/wjFDx2hhYSC
MMdIZSd/fPSQkljLHisDvPQ100xJHC0L6NzJs6fPn0CDCh1KFGiKmjhinizKtKnTp01PIL2h1ATUq1izMjUx1UbV
ElrDig3L9aBGsGPTqo1KoiulmzdCrp1L92cJtzS+jqjLt+5ds03k9h2c9m9DuDYEE16c1TATvSIKg2AseQReUohr
KMZqlbJWxxMz0wiJ72oKz43bAmZCumC+Fq5jy+4HGgnkh65hzN4tu3bGwHcJDpjBuzhB30ZuVxw4YDhx49D9Ifco
mnhwgM2zj47O/bXqw2fbYs9O/nl32QbSG/BueXWS1v3Iy29u/rxA9fjZi7gMQznI+P/zBajbP/ipN9t6AhSoYHrT
CeEfSzLhE+CE2n1A31H9LGhgbBou2CBJ4VkmAIUklmfhCvt0mB4/uGWoIoPfPVadbiWkV+KNJjqHQood6iOePi+q
VxZ4wJGA45ECYhgkjCaQt+SQMoYoApJUypfCkgakUKKQWUIZmpQhVCmmiSa8WAIAAFiI41HuIRHSmHDqWKaHIqBpp
51HskkkayXEGeeV+NV556BoTninnlEWOYKfcAIqJAiERirpoDu2ecSbjI4Jw6ScciqVpUZgmmmVLXRqqqcfAvFgAK
OSasKpsMKaqkozviBqqySeEOuup87qw6q45qorr8RO6itMtbpwa7D/Vr5a7LOEHgtJsrD1+WeY86UA7bZ2SmsTmCD
4OWW2hg3A7bbeJkUtCyNdG26S+yk0gADnQpsuVeui2OSY0c2LT73F3utVviq0y+qN9vEDMK8CvwXuuBQm7M/CsTac
F8GI9nnnhAVIrA/Fssb4paIkmOrxPiCH3N6e7zl76sn0ptyryLZhXOmZu/Yj887R0vwbnyXzLDTAFmP2sAdDJ81t0
f3Z/GnQSkfNsM/JOe1lCFJnXTHV1B0dgNZgd8r0C6uGbXakY2NidYNnt90t1w6uDbfbbqe9htwrjzDoA4QyYGcEdJ
tqtxVe/20BmhqErTMADAy+wqoEIF4B4xwoIPNs/ws4PgTe+5VQeeUL89Y43CCSHMLnHJwbXeakq8r5Q56jnnqkPRF
63k6ac/J6RRTKDrrhPtkpMe4T8kf27iD1LgFPvkPAvAMe7xQxqEWMOGEEBTSQffMWwCx98dQLYX2A3EM/0AMw8zM9
y24qj71P76ef8PqJsua+A1jJbx/9I9t//QNZEUDH9AcdEhlPbRohEf7EQkDjGDB8QRgf+RbIwAbKpkQHvFsCFcgAt
VgwNgiDIBAkqLy1fFA4OMog4QLDrBa60E8qfBzyWPLCGtowhSL8AQlvyEMexnBzG+yhEG/4Q90FcYhIbGERUaCUJD
qRWUs8QROfSMVMRXEHM5RJFf+3GKcrxk4jJwzjeXJIDz/EpIz9QyM71JgONjrijG6Mmx+4WCIzZpEFjMKSHhfEKDT
A0VpIWpLHluSqLfwRYltSkRjx8aI8aeGQ2LrRixaZIBU5MguQRCSOBCkxQlLpC5ncV5z2SEr19PEac6QjhewYR0WE
spXqgqUhXilLh9WyHrfEZS6LccddxtKXyOglMG05TDnQsphARKYzhKlMBDYzGsx8pgylqYZjUhMO0bymFLOpzS92c
wzW/KYHwilOcn7TnN1EpzbVeU12UtOd0oTnM+XZTHoq057IxGcx9TlMfgLTn74E6C4FmkuC3tKgtUSoLBUKS4a20q
FxLJ9EJ0oH0YpaVAMJAAA7';
// header('HTTP/1.1 404 Not Found');
header('Content-type: image/gif');
header('X-Thumb-Cache: BLANK-'.$_SERVER['REQUEST_TIME']);
echo base64_decode($src_data);
exit;
}
private static function exists($file) {
return @stat($file)===false?false:true;
}
/**
* 等高/宽缩放
* @param [type] $a [description]
* @param boolean $reSize [description]
* @return [type] [description]
*/
private static function scale($a,$reSize=true) {
if($reSize){
if($a['w'] > $a['h'] ||$a['w'] == $a['h']){
$s = ($a['h'] > $a['th'])? $a['th']/$a['h'] : $a['h']/$a['th'];
$a['w'] = ceil($s * $a['w']);
$a['h'] = ($a['h'] > $a['th'])? $a['th'] : $a['h'];
}else if($a['h'] > $a['w']){
$s = ($a['w'] > $a['tw']) ? $a['tw']/$a['w'] : $a['w']/$a['tw'];
$a['h'] = ceil($s * $a['h']);
$a['w'] = ($a['w'] > $a['tw']) ? $a['tw'] : $a['w'];
}
}
return $a;
}
/**
* 等比缩放
* @param [type] $a [description]
* @param boolean $reSize [description]
* @return [type] [description]
*/
private static function bitScale($a,$reSize=true) {
if($reSize){
if( $a['w']/$a['h'] > $a['tw']/$a['th'] && $a['w'] >$a['tw'] ){
$a['h'] = ceil($a['h'] * ($a['tw']/$a['w']));
$a['w'] = $a['tw'];
}else if( $a['w']/$a['h'] <= $a['tw']/$a['th'] && $a['h'] >$a['th']){
$a['w'] = ceil($a['w'] * ($a['th']/$a['h']));
$a['h'] = $a['th'];
}
}
return $a;
}
private static function finish() {
function_exists('fastcgi_finish_request') && fastcgi_finish_request();
}
public static function cache($path,$data=null){
self::$cache_dir = rtrim(self::$RES_PATH,'/').'/'.trim(self::$RES_CACHE_DIR,'/').'/';
$cachePath = self::cacheFilePath($path,($data==='get'?null:'add'));
$cacheTime = @filemtime($cachePath);
if($cacheTime===false ||(
self::$RES_CACHE_TIME>0 &&
$_SERVER['REQUEST_TIME']-(int)$cacheTime>self::$RES_CACHE_TIME))
{
if($data==='get') return null;
self::write($cachePath,$data);
header('X-Thumb-Cache: SET-'.$_SERVER['REQUEST_TIME']);
return true;
}
header('X-Thumb-Cache: HIT-'.$_SERVER['REQUEST_TIME']);
return file_get_contents($cachePath);
}
public static function cacheUrl($path,$xxx){
// var_dump($xxx);
// if(iPHP_RES_HOST){
// $url = str_replace(self::$cache_dir, iPHP_RES_HOST, $path);
// var_dump($url);
// exit();
// }
}
public static function cacheFilePath($path,$method=null){
$md5 = md5($path);
$dirPath = self::$cache_dir.substr($md5,-1).'/'.substr($md5,-3,2).'/';
$fileName = pathinfo($path, PATHINFO_FILENAME);
if (!file_exists($dirPath) && $method=='add'){
self::mkdir($dirPath);
}
return $dirPath.$fileName.'.jpg';
}
private static function check($fn) {
strpos($fn,'..')!==false && trigger_error('What are you doing?',E_USER_ERROR);
}
private function delete($fn) {
self::check($fn);
@chmod ($fn, 0777);
return @unlink($fn);
}
private static function write($fn,$data,$method="wb+",$iflock=1,$chmod=1) {
self::check($fn);
// @touch($fn);
$handle = fopen($fn,$method);
$iflock && flock($handle,LOCK_EX);
fwrite($handle,$data);
// $method=="rb+" && ftruncate($handle,strlen($data));
fclose($handle);
$chmod && @chmod($fn,0777);
}
private static function escapeDir($dir) {
$dir = str_replace(array("'",'#','=','`','$','%','&',';'), '', $dir);
return rtrim(preg_replace('/(\/){2,}|(\\\){1,}/', '/', $dir), '/');
}
private static function mkdir($d) {
$d = self::escapeDir($d) ;
$d = str_replace( '//', '/', $d );
if ( file_exists($d) )
return @is_dir($d);
// Attempting to create the directory may clutter up our display.
if ( @mkdir($d) ) {
$stat = @stat(dirname($d));
$dir_perms = $stat['mode'] & 0007777; // Get the permission bits.
@chmod($d, $dir_perms );
return true;
} elseif (is_dir(dirname($d))) {
return false;
}
// If the above failed, attempt to create the parent node, then try again.
if ( ( $d != '/' ) && ( self::mkdir(dirname($d))))
return self::mkdir( $d );
return false;
}
}