In my previous post i had posted how you can make a zip file in Php. But i know many of you are also looking to unzip a zip file in php. So here i am back with the solution.
The class i am going to provide you has been taken from the Phpmyadmin code. By using this class you can easily extract a zip file and can save all the files and folders in any zip file and yes you can do this all in Php 
if you are looking for how to zip files then click here
Here is the code for the unzip class
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 | class SimpleUnzip { // 2003-12-02 - HB > /** * Array to store file entries * * @var string * @access public * @see ReadFile() * @since 1.0.1 */ var $Comment = ''; // 2003-12-02 - HB < /** * Array to store file entries * * @var array * @access public * @see ReadFile() * @since 1.0 */ var $Entries = array(); /** * Name of the ZIP file * * @var string * @access public * @see ReadFile() * @since 1.0 */ var $Name = ''; /** * Size of the ZIP file * * @var integer * @access public * @see ReadFile() * @since 1.0 */ var $Size = 0; /** * Time of the ZIP file (unix timestamp) * * @var integer * @access public * @see ReadFile() * @since 1.0 */ var $Time = 0; /** * Contructor of the class * * @param string File name * @return SimpleUnzip Instanced class * @access public * @uses SimpleUnzip::ReadFile() Opens file on new if specified * @since 1.0 */ function SimpleUnzip($in_FileName = '') { if ($in_FileName !== '') { SimpleUnzip::ReadFile($in_FileName); } } // end of the 'SimpleUnzip' constructor /** * Counts the entries * * @return integer Count of ZIP entries * @access public * @uses $Entries * @since 1.0 */ function Count() { return count($this->Entries); } // end of the 'Count()' method /** * Gets data of the specified ZIP entry * * @param integer Index of the ZIP entry * @return mixed Data for the ZIP entry * @uses SimpleUnzipEntry::$Data * @access public * @since 1.0 */ function GetData($in_Index) { return $this->Entries[$in_Index]->Data; } // end of the 'GetData()' method /** * Gets an entry of the ZIP file * * @param integer Index of the ZIP entry * @return SimpleUnzipEntry Entry of the ZIP file * @uses $Entries * @access public * @since 1.0 */ function GetEntry($in_Index) { return $this->Entries[$in_Index]; } // end of the 'GetEntry()' method /** * Gets error code for the specified ZIP entry * * @param integer Index of the ZIP entry * @return integer Error code for the ZIP entry * @uses SimpleUnzipEntry::$Error * @access public * @since 1.0 */ function GetError($in_Index) { return $this->Entries[$in_Index]->Error; } // end of the 'GetError()' method /** * Gets error message for the specified ZIP entry * * @param integer Index of the ZIP entry * @return string Error message for the ZIP entry * @uses SimpleUnzipEntry::$ErrorMsg * @access public * @since 1.0 */ function GetErrorMsg($in_Index) { return $this->Entries[$in_Index]->ErrorMsg; } // end of the 'GetErrorMsg()' method /** * Gets file name for the specified ZIP entry * * @param integer Index of the ZIP entry * @return string File name for the ZIP entry * @uses SimpleUnzipEntry::$Name * @access public * @since 1.0 */ function GetName($in_Index) { return $this->Entries[$in_Index]->Name; } // end of the 'GetName()' method /** * Gets path of the file for the specified ZIP entry * * @param integer Index of the ZIP entry * @return string Path of the file for the ZIP entry * @uses SimpleUnzipEntry::$Path * @access public * @since 1.0 */ function GetPath($in_Index) { return $this->Entries[$in_Index]->Path; } // end of the 'GetPath()' method /** * Gets file time for the specified ZIP entry * * @param integer Index of the ZIP entry * @return integer File time for the ZIP entry (unix timestamp) * @uses SimpleUnzipEntry::$Time * @access public * @since 1.0 */ function GetTime($in_Index) { return $this->Entries[$in_Index]->Time; } // end of the 'GetTime()' method /** * Reads ZIP file and extracts the entries * * @param string File name of the ZIP archive * @return array ZIP entry list (see also class variable {@link $Entries $Entries}) * @uses SimpleUnzipEntry For the entries * @access public * @since 1.0 */ function ReadFile($in_FileName) { $this->Entries = array(); // Get file parameters $this->Name = $in_FileName; $this->Time = filemtime($in_FileName); $this->Size = filesize($in_FileName); // Read file $oF = fopen($in_FileName, 'rb'); $vZ = fread($oF, $this->Size); fclose($oF); // 2003-12-02 - HB > // Cut end of central directory $aE = explode("\x50\x4b\x05\x06", $vZ); // Easiest way, but not sure if format changes //$this->Comment = substr($aE[1], 18); // Normal way $aP = unpack('x16/v1CL', $aE[1]); $this->Comment = substr($aE[1], 18, $aP['CL']); // Translates end of line from other operating systems $this->Comment = strtr($this->Comment, array("\r\n" => "\n", "\r" => "\n")); // 2003-12-02 - HB < // Cut the entries from the central directory $aE = explode("\x50\x4b\x01\x02", $vZ); // Explode to each part $aE = explode("\x50\x4b\x03\x04", $aE[0]); // Shift out spanning signature or empty entry array_shift($aE); // Loop through the entries foreach ($aE as $vZ) { $aI = array(); $aI['E'] = 0; $aI['EM'] = ''; // Retrieving local file header information $aP = unpack('v1VN/v1GPF/v1CM/v1FT/v1FD/V1CRC/V1CS/V1UCS/v1FNL', $vZ); // Check if data is encrypted $bE = ($aP['GPF'] & 0x0001) ? TRUE : FALSE; $nF = $aP['FNL']; // Special case : value block after the compressed data if ($aP['GPF'] & 0x0008) { $aP1 = unpack('V1CRC/V1CS/V1UCS', substr($vZ, -12)); $aP['CRC'] = $aP1['CRC']; $aP['CS'] = $aP1['CS']; $aP['UCS'] = $aP1['UCS']; $vZ = substr($vZ, 0, -12); } // Getting stored filename $aI['N'] = substr($vZ, 26, $nF); if (substr($aI['N'], -1) == '/') { // is a directory entry - will be skipped continue; } // Truncate full filename in path and filename $aI['P'] = dirname($aI['N']); $aI['P'] = $aI['P'] == '.' ? '' : $aI['P']; $aI['N'] = basename($aI['N']); $vZ = substr($vZ, 26 + $nF); if (strlen($vZ) != $aP['CS']) { $aI['E'] = 1; $aI['EM'] = 'Compressed size is not equal with the value in header information.'; } else { if ($bE) { $aI['E'] = 5; $aI['EM'] = 'File is encrypted, which is not supported from this class.'; } else { switch($aP['CM']) { case 0: // Stored // Here is nothing to do, the file ist flat. break; case 8: // Deflated $vZ = gzinflate($vZ); break; case 12: // BZIP2 // 2003-12-02 - HB > if (! extension_loaded('bz2')) { if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') { @dl('php_bz2.dll'); } else { @dl('bz2.so'); } } if (extension_loaded('bz2')) { // 2003-12-02 - HB < $vZ = bzdecompress($vZ); // 2003-12-02 - HB > } else { $aI['E'] = 7; $aI['EM'] = "PHP BZIP2 extension not available."; } // 2003-12-02 - HB < break; default: $aI['E'] = 6; $aI['EM'] = "De-/Compression method {$aP['CM']} is not supported."; } // 2003-12-02 - HB > if (! $aI['E']) { // 2003-12-02 - HB < if ($vZ === FALSE) { $aI['E'] = 2; $aI['EM'] = 'Decompression of data failed.'; } else { if (strlen($vZ) != $aP['UCS']) { $aI['E'] = 3; $aI['EM'] = 'Uncompressed size is not equal with the value in header information.'; } else { if (crc32($vZ) != $aP['CRC']) { $aI['E'] = 4; $aI['EM'] = 'CRC32 checksum is not equal with the value in header information.'; } } } // 2003-12-02 - HB > } // 2003-12-02 - HB < } } $aI['D'] = $vZ; // DOS to UNIX timestamp $aI['T'] = mktime(($aP['FT'] & 0xf800) >> 11, ($aP['FT'] & 0x07e0) >> 5, ($aP['FT'] & 0x001f) << 1, ($aP['FD'] & 0x01e0) >> 5, ($aP['FD'] & 0x001f), (($aP['FD'] & 0xfe00) >> 9) + 1980); $this->Entries[] = &new SimpleUnzipEntry($aI); } // end for each entries return $this->Entries; } // end of the 'ReadFile()' method } // end of the 'SimpleUnzip' class /** * Entry of the ZIP file. * * @category phpPublic * @package File-Formats-ZIP * @subpackage Unzip * @version 1.0 * @author Holger Boskugel <vbwebprofi@gmx.de> * @example example.unzip.php Two examples */ class SimpleUnzipEntry { /** * Data of the file entry * * @var mixed * @access public * @see SimpleUnzipEntry() * @since 1.0 */ var $Data = ''; /** * Error of the file entry * * - 0 : No error raised.<BR> * - 1 : Compressed size is not equal with the value in header information.<BR> * - 2 : Decompression of data failed.<BR> * - 3 : Uncompressed size is not equal with the value in header information.<BR> * - 4 : CRC32 checksum is not equal with the value in header information.<BR> * - 5 : File is encrypted, which is not supported from this class.<BR> * - 6 : De-/Compression method ... is not supported.<BR> * - 7 : PHP BZIP2 extension not available. * * @var integer * @access public * @see SimpleUnzipEntry() * @since 1.0 */ var $Error = 0; /** * Error message of the file entry * * @var string * @access public * @see SimpleUnzipEntry() * @since 1.0 */ var $ErrorMsg = ''; /** * File name of the file entry * * @var string * @access public * @see SimpleUnzipEntry() * @since 1.0 */ var $Name = ''; /** * File path of the file entry * * @var string * @access public * @see SimpleUnzipEntry() * @since 1.0 */ var $Path = ''; /** * File time of the file entry (unix timestamp) * * @var integer * @access public * @see SimpleUnzipEntry() * @since 1.0 */ var $Time = 0; /** * Contructor of the class * * @param array Entry datas * @return SimpleUnzipEntry Instanced class * @access public * @since 1.0 */ function SimpleUnzipEntry($in_Entry) { $this->Data = $in_Entry['D']; $this->Error = $in_Entry['E']; $this->ErrorMsg = $in_Entry['EM']; $this->Name = $in_Entry['N']; $this->Path = $in_Entry['P']; $this->Time = $in_Entry['T']; } // end of the 'SimpleUnzipEntry' constructor } // end of the 'SimpleUnzipEntry' class |
Here is the code through which you can use this class in your Php file.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | $obj = new SimpleUnzipEntry(); $obj->ReadFile($path_of_the_zip_file_on_server); if ($obj->Count() == 0) { //check if zip is empty echo "The Zip file is empty"; } else { for($i=0;$i<$obj->Count();$i++) { $data=$obj->GetData($i); // gives you the data of the current file in zip $name=$obj->GetName($i); // gives you the name of the current file in zip file_put_contents($name,$data); //saving the file on server } } |
if you are looking for how to zip files then click here