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110 lines
2.4 KiB
110 lines
2.4 KiB
2 years ago
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<?php
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/**
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* 全局函数
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* @author yangjian<yangjian102621@gmail.com>
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*/
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// 文件上传的根路径
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define('BASE_PATH', dirname(__DIR__)."/uploads/");
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// 文件上传路径前缀
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define('UPLOAD_PREFIX', date('Ym').'/'.date('d').'/');
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// 文件上传的根 url
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define('BASE_URL', dirname(dirname(dirname($_SERVER['PHP_SELF'])))."/uploads/");
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/**
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* 创建多级目录
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* @param $dir
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*/
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function mkdirs($path) {
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$files = preg_split('/[\/|\\\]/s', $path);
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$_dir = '';
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foreach ($files as $value) {
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$_dir .= $value.DIRECTORY_SEPARATOR;
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if ( !file_exists($_dir) ) {
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mkdir($_dir);
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}
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}
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}
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/**
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* 获取文件后缀名
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* @param $filename
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* @return string
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*/
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function getFileExt($filename) {
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$temp_arr = explode(".", $filename);
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$file_ext = array_pop($temp_arr);
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return strtolower(trim($file_ext));
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}
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/**
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* 显示图片
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* @param $image
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* @param $img_url
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*/
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function show_image($image, $img_url) {
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$info = pathinfo($img_url);
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switch ( strtolower($info["extension"]) ) {
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case "jpg":
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case "jpeg":
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header('content-type:image/jpg;');
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imagejpeg($image);
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break;
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case "gif":
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header('content-type:image/gif;');
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imagegif($image);
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break;
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case "png":
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header('content-type:image/png;');
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imagepng($image);
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break;
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default:
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header('content-type:image/wbmp;');
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image2wbmp($image);
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}
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}
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/**
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* 生成新的文件名
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* @param $file
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* @return string
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*/
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function genNewFilename($file) {
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$extesion = getFileExt($file);
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return date("YmdHis") . '_' . rand(10000, 99999) . '.' . $extesion;
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}
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/**
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* 清空目录
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* @param $dirName
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* @return bool
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*/
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function deldir($dirName) {
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//节省资源，每天清理一次
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$file = "cache.tmp";
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$t = @file_get_contents($file);
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$now = time();
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if ($now - intval($t) < 60*60*24) {
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return false;
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}
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file_put_contents($file, $now);
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if(file_exists($dirName) && $handle=opendir($dirName)){
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while(false!==($item = readdir($handle))){
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if($item!= "." && $item != ".."){
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if(file_exists($dirName.'/'.$item) && is_dir($dirName.'/'.$item)){
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delFile($dirName.'/'.$item);
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}else{
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@unlink($dirName.'/'.$item);
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}
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}
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}
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closedir( $handle);
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}
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}
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