How does PHP compress all the files inside a folder into a zip file?

How does PHP compress all the files in a folder into a zip file?
How does PHP compress all the files in a folder into a zip file?

If there is a test folder under my localhost, there are many files and folders inside, how to package everything in Test into test.zip?

------Solution--------------------

PHP Code

    Function Readfileheader ($zip) {$binary _data = fread ($zip, 30); $data = Unpack (' vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/vcrc/vcompressed_size/vsize/vfilename_len/        Vextra_len ', $binary _data);        $header [' filename '] = fread ($zip, $data [' Filename_len ']); IF ($data [' Extra_len ']! = 0) {$header [' extra '] = Fread ($zip, $data [' Extra_len ']);}        else{$header [' extra '] = ';}        $header [' compression '] = $data [' compression '];        $header [' size '] = $data [' Size '];        $header [' compressed_size '] = $data [' compressed_size '];        $header [' CRC '] = $data [' CRC '];        $header [' flag '] = $data [' flag '];        $header [' mdate '] = $data [' mdate '];        $header [' mtime '] = $data [' Mtime '];            IF ($header [' mdate '] && $header [' mtime ']) {$hour = ($header [' Mtime ']&0xf800) >> 11;            $minute = ($header [' Mtime ']&0x07e0) >> 5;            $seconde = ($header [' mtime ']&0x001f) * 2; $year = ($header [' Mdate ']&0xFE00) >> 9) + 1980;            $month = ($header [' mdate ']&0x01e0) >> 5;            $day = $header [' Mdate ']&0x001f;        $header [' mtime '] = Mktime ($hour, $minute, $seconde, $month, $day, $year);        }else{$header [' mtime '] = time ();        } $header [' stored_filename '] = $header [' filename '];        $header [' status '] = "OK";    Return $header;        } Function readcentralfileheaders ($zip) {$binary _data = fread ($zip, 46); $header = Unpack (' vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/vcrc/vcompressed_size/        Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/vexternal/voffset ', $binary _data);        IF ($header [' Filename_len ']! = 0) $header [' filename '] = fread ($zip, $header [' Filename_len ']);        Else $header [' filename '] = ';        IF ($header [' Extra_len ']! = 0) $header [' extra '] = Fread ($zip, $header [' Extra_len ']);        Else $header [' extra '] = '; IF ($header [' COmment_len ']! = 0) $header [' comment '] = fread ($zip, $header [' Comment_len ']);        Else $header [' comment '] = ';            IF ($header [' mdate '] && $header [' mtime ']) {$hour = ($header [' mtime '] &0xf800) >> 11;            $minute = ($header [' mtime '] &0x07e0) >> 5;            $seconde = ($header [' mtime '] &0x001f) * 2;            $year = (($header [' mdate '] &0xfe00) >> 9) + 1980;            $month = ($header [' mdate '] &0x01e0) >> 5;            $day = $header [' mdate '] &0x001F;        $header [' mtime '] = Mktime ($hour, $minute, $seconde, $month, $day, $year);        }else{$header [' mtime '] = time ();        } $header [' stored_filename '] = $header [' filename '];        $header [' status '] = ' OK ';        IF (substr ($header [' filename '],-1) = = '/') $header [' external '] = 0x41ff0010;    Return $header;        } Function Readcentraldir ($zip, $zip _name) {$size = FileSize ($zip _name); IF ($Size < 277) {$maximum _size = $size;}        else{$maximum _size = 277;}        @fseek ($zip, $size-$maximum _size);        $pos = Ftell ($zip);        $bytes = 0x00000000;            while ($pos < $size) {$byte = @fread ($zip, 1); $bytes = ($bytes << 8) |            Ord ($byte);                IF ($bytes = = 0x504b0506) {$pos + +;            Break        } $pos + +;        } $data = Unpack (' Vdisk/vdisk_start/vdisk_entries/ventries/vsize/voffset/vcomment_size ', Fread ($zip, 18)); IF ($data [' comment_size ']! = 0) {$centd [' comment '] = fread ($zip, $data [' comment_size ']);}        else{$centd [' comment '] = ';}        $centd [' entries '] = $data [' Entries '];        $centd [' disk_entries '] = $data [' disk_entries '];        $centd [' offset '] = $data [' offset '];        $centd [' disk_start '] = $data [' Disk_start '];        $centd [' size '] = $data [' Size '];        $CENTD [' disk '] = $data [' Disk '];    Return $centd; } Function Extractfile ($header, $to, $zip) {$headER = $this-Readfileheader ($zip);        IF (substr ($to,-1)! = "/") $to. = "/";        IF (! @is_dir ($to)) @mkdir ($to, 0777);        $pth = Explode ("/", DirName ($header [' filename ']);            for ($i = 0;isset ($pth [$i]), $i + +) {IF (! $pth [$i]) continue; $pthss. = $pth [$i].            "/";        IF (!is_dir ($to. $pthss)) @mkdir ($to. $PTHSS, 0777); } IF (! ( $header [' external '] = = 0x41ff0010) &&! ($header [' external '] = = 16))                {IF ($header [' compression '] = = 0) {$fp = @fopen ($to. $header [' filename '], ' WB ');                IF (! $fp) Return (-1);                $size = $header [' compressed_size '];                    while ($size! = 0) {$read _size = ($size < 2048? $size: 2048);                    $buffer = Fread ($zip, $read _size);                    $binary _data = Pack (' a '. $read _size, $buffer);                    @fwrite ($fp, $binary _data, $read _size);                $size-= $read _size;        }        Fclose ($FP);            Touch ($to. $header [' filename '], $header [' mtime ']; }else{$fp = @fopen ($to. $header [' filename '].                '. Gz ', ' WB ');                IF (! $fp) Return (-1); $binary _data = Pack (' va1a1va1a1 ', 0x8b1f, Chr ($header [' compression ']), Chr (0x00), Time (), Chr (0x00), Ch                R (3));                Fwrite ($fp, $binary _data, 10);                $size = $header [' compressed_size '];                    while ($size! = 0) {$read _size = ($size < 1024x768 $size: 1024);                    $buffer = Fread ($zip, $read _size);                    $binary _data = Pack (' a '. $read _size, $buffer);                    @fwrite ($fp, $binary _data, $read _size);                $size-= $read _size;                } $binary _data = Pack (' VV ', $header [' CRC '], $header [' size '];                Fwrite ($fp, $binary _data, 8);                Fclose ($FP); $GZP = @gzopen ($to. $header [' filename ']. '. gz', ' RB ') or die ("Cette archive est compress gluttony");                IF (! $gzp) Return (-2);                $fp = @fopen ($to. $header [' filename '], ' WB ');                IF (! $fp) Return (-1);                $size = $header [' Size '];                    while ($size! = 0) {$read _size = ($size < 2048? $size: 2048);                    $buffer = Gzread ($gzp, $read _size);                    $binary _data = Pack (' a '. $read _size, $buffer);                    @fwrite ($fp, $binary _data, $read _size);                $size-= $read _size;                } fclose ($FP);                Gzclose ($GZP);                Touch ($to. $header [' filename '], $header [' mtime ']; @unlink ($to. $header [' filename '].            '. Gz ');    }} Return true;  }}
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