PHP File download Class code, PHP file Download processing class

/* * Function: File download */ /** * How to use: $download = new Download (); *//Set parameters * $download->set_file_dir ("c:/"); * $download->set_file_name ("boot. ini"); * $download->set_read_bytes (1024); *//File Download processing operation * $download->deal_with (); *//Determine if the file exists * IF ($download->is_file_exist ()) { *echo "File_exist"; *}else{ *echo "File_not_exist"; *} */ Class Download { Private $file = null;//file handle Private $file _dir = "";//directory where the file is located Private $file _name = "";//File name Private $file _exist = false;//Indicates whether the file exists, default is not present Private $read _bytes = 0;//file Read bytes Private $mode = "R";//access type of file Public Function __construct () { } Public Function __destruct () { if (null! = $this->file) { Fclose ($this->file); } } /** * Operation of File download processing */bbs.it-home.org Public Function Deal_with () { File full path $file _path = $this->file_dir. $this->file_name; Check if the file exists if (file_exists ($file _path)) { $this->file_exist = true; Open File $this->file = fopen ($file _path, $this->mode); Input File Label Header ("Content-type:application/octet-stream"); Header ("Accept-ranges:bytes"); Header ("Accept-length:".) FileSize ($file _path)); Header ("content-disposition:attachment; Filename= ". $this->file_name); Output file contents while (!feof ($this->file)) { $out = Fread ($this->file, $this->read_bytes); if (!GET_MAGIC_QUOTES_GPC ()) { Echo $out; } Else { echo stripslashes ($out); } } Echo fread ($file, FileSize ($file _dir. $file _name)); } } /** * The return value is TRUE or FALSE, which determines whether the file exists by its value */ Public Function is_file_exist () { return $this->file_exist; } /** * Parameter type is string */ Public Function Set_file_dir ($file _dir= "") { $this->file_dir = $file _dir; } /** * Parameter type is string */ Public Function Set_file_name ($file _name= "") { $this->file_name = $file _name; } /** * Parameter type is integral type */ Public Function set_read_bytes ($read _bytes=1024) { $this->read_bytes = $read _bytes; } } ?> Copy Code

