PHP Package Zip image Download method

This article mainly introduces the PHP packaging zip image download method, has a certain reference value, now share to everyone, the need for friends can refer to

1. Introduction of Class Pack ZipFile

Class ZipFile {var $datasec = array ();    var $ctrl _dir = Array ();    var $eof _ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";        var $old _offset = 0;                function Unix2_dostime ($unixtime = 0) {$timearray = ($unixtime = = 0)? getdate (): getdate ($unixtime);            if ($timearray [' Year '] < 1980} {$timearray [' year '] = 1980;            $timearray [' mon '] = 1;            $timearray [' mday '] = 1;            $timearray [' hours '] = 0;            $timearray [' minutes '] = 0;        $timearray [' seconds '] = 0; } return (($timearray [' Year ']-1980) << 25) | ($timearray [' mon '] << 21) | ($timearray [' Mday '] << 16) | ($timearray [' hours '] << 11) | ($timearray [' minutes '] << 5) |    ($timearray [' seconds '] >> 1);                } function Add_file ($data, $name, $time = 0) {$name = str_replace (' \ \ ', '/', $name);        $dtime = Dechex ($this->unix2_dostime ($time)); $hexdtime = ' \x '. $dtime [6]. $dtime [7]. ' \x '. $dtime [4]. $dtime [5]. ' \x '. $dtime [2]. $dtime [3]. ' \x '. $dtime [0].        $dtime [1]; Eval (' $hexdtime = '. $hexdtime.                '";');        $FR = "\x50\x4b\x03\x04";        $fr. = "\x14\x00";        $fr. = "\x00\x00";        $fr. = "\x08\x00";                $fr. = $hexdtime;        $unc _len = strlen ($data);        $CRC = CRC32 ($data);        $zdata = gzcompress ($data);        $zdata = substr (substr ($zdata, 0, strlen ($zdata)-4), 2);        $c _len = strlen ($zdata);        $fr. = Pack (' V ', $CRC);        $fr. = Pack (' V ', $c _len);        $fr. = Pack (' V ', $unc _len);        $fr. = Pack (' V ', strlen ($name));        $fr. = Pack (' V ', 0);                $fr. = $name;        $fr. = $zdata;        $fr. = Pack (' V ', $CRC);        $fr. = Pack (' V ', $c _len);                $fr. = Pack (' V ', $unc _len);                $this->datasec [] = $FR;        $cdrec = "\x50\x4b\x01\x02";        $cdrec. = "\x00\x00";        $cdrec. = "\x14\x00";   $cdrec. = "\x00\x00";     $cdrec. = "\x08\x00";        $cdrec. = $hexdtime;        $cdrec. = Pack (' V ', $CRC);        $cdrec. = Pack (' V ', $c _len);        $cdrec. = Pack (' V ', $unc _len);        $cdrec. = Pack (' V ', strlen ($name));        $cdrec. = Pack (' V ', 0);        $cdrec. = Pack (' V ', 0);        $cdrec. = Pack (' V ', 0);        $cdrec. = Pack (' V ', 0);                $cdrec. = Pack (' V ', 32);        $cdrec. = Pack (' V ', $this->old_offset);                $this->old_offset + = strlen ($FR);                $cdrec. = $name;    $this->ctrl_dir[] = $cdrec;        } function Add_path ($path, $l = 0) {$d = @opendir ($path); $l = $l > 0?        $l: strlen ($path) + 1; while ($v = @readdir ($d)) {if ($v = = '. ' | | $v = = ' ... ')            {continue; } $v = $path. '/' .            $v;            if (Is_dir ($v)) {$this->add_path ($v, $l);            } else {$this->add_file (file_get_contents ($v), substr ($v, $l));    }        }    }function file () {$data = implode (' ', $this->datasec);        $ctrldir = Implode (' ', $this->ctrl_dir); Return $data. $ctrldir. $this->eof_ctrl_dir. Pack (' V ', sizeof ($this->ctrl_dir)). Pack (' V ', sizeof ($this->ctrl_dir)). Pack (' V ', strlen ($ctrldir)). Pack (' V ', strlen ($data)).    "\x00\x00";  } function Add_files ($files) {foreach ($files as $file) {if (Is_file ($file)) {$data                = Implode ("", File ($file));            $this->add_file ($data, $file);        }}} function output ($file) {$fp = fopen ($file, "w");        Fwrite ($fp, $this->file ());    Fclose ($FP); }}

2. Instance

$dfile = Tempnam ('/tmp ', ' tmp ');//Generate a temporary file to cache the download file $zip = new \org\util\zipfile ();//----------------------$filename = ' QR code '. Date ("Y-m-d h:i", Time ()). Zip ';     Download the default file name//below is the picture array information that needs to be downloaded, convert the picture information that needs to be downloaded to similar can $params[' ids ' = Explode (', ', $params [' IDs ']);//Get Picture $image = Array ( Array (' image_src ' = ' pic1.jpg ', ' image_name ' + ' picture 1.jpg '), Array (' image_src ' = ' pic2.jpg ', ' image_name ' =& Gt    ' pic/image 2.jpg '), foreach ($image as $v) {$zip->add_file (file_get_contents ($v [' image_src ']), $v [' image_name ']); Add a packaged picture, the first parameter is the picture content, the second parameter is the name of the display in the compressed package, can contain the path//or want to package the entire directory with $zip->add_path ($image _path);} ----------------------$zip->output ($dfile);//download file Ob_clean (); header (' Pragma:public '); header (' Last-modified : '. Gmdate (' d, D M Y h:i:s '). ' GMT '); header (' Cache-control:no-store, No-cache, Must-revalidate '); header (' Cache-control:pre-check=0, post-check= 0, max-age=0 '); header (' content-transfer-encoding:binary '); header (' Content-encoding:none '); header (' Content-type: Multipart/form-datA '); header (' Content-disposition:attachment; Filename= '. $filename. '); Sets the default file name of the download header (' content-length: '. FileSize ($dfile)); $fp = fopen ($dfile, ' R '); while (connection_status () = = 0 & & $buf = @fread ($fp, 8192)) {echo $buf;} Fclose ($FP); @unlink ($dfile); @flush (); @ob_flush (); exit ();

It is worth mentioning that the package download when the Chinese folder or Chinese name garbled when the following methods can be resolved

$name = Iconv (' utf-8 ', ' gb2312 ', $name);

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