用法：
<?php $filefullpath="F:/test/2awd45wr1e5fef5e5"; echo Format::check($filefullpath,['png','jpg','gif']);
格式检查类：
1 <?php 2 /** 3 * lib_format.php 4 * $Author: YunGaZeon $ 5 * $Blog: http://www.cnblogs.com/GaZeon/ $ 6 * $Id: lib_collection.php Date:2017-8-14 YunGaZeon $ 7 */ 8 9 class Format 10 { 11 public static function check($data,$formats=[]) 12 { 13 $_fc=new FormatChecker; 14 15 return $_fc->check($data,$formats); 16 } 17 } 18 19 class FormatChecker 20 { 21 private $_format=[ 22 'jp2' => '0000000C6A502020', 23 '3gp' => '0000002066747970', 24 '3gp5' => '0000001866747970', 25 'm4a' => '00000020667479704D3441', 26 'ico' => '00000100', 27 'spl' => '00000100', 28 'vob' => '000001BA', 29 'cur' => '00000200', 30 'wb2' => '00000200', 31 'wk1' => '0000020006040600', 32 'wk3' => '00001A0000100400', 33 'wk4' => '00001A0002100400', 34 'wk5' => '00001A0002100400', 35 '123' => '00001A00051004', 36 'qxd' => '00004D4D585052', 37 'mdf' => '010F0000', 38 'tr1' => '0110', 39 'rgb' => '01DA01010003', 40 'drw' => '07', 41 'dss' => '02647373', 42 'dat' => 'A90D000000000000', 43 'db3' => '03', 44 'qph' => '03000000', 45 'adx' => '80000020031204', 46 'db4' => '04', 47 'n' => 'FFFE0000', 48 'a' => 'FFFE0000', 49 'skf' => '07534B46', 50 'dtd' => '0764743264647464', 51 'db' => 'D0CF11E0A1B11AE1', 52 'pcx' => '0A050101', 53 'mp' => '0CED', 54 'doc' => 'D0CF11E0A1B11AE1', 55 'nri' => '0E4E65726F49534F', 56 'wks' => 'FF00020004040554', 57 'pf' => '1100000053434341', 58 'ntf' => '4E49544630', 59 'nsf' => '4E45534D1A01', 60 'arc' => '41724301', 61 'pak' => '5041434B', 62 'eth' => '1A350100', 63 'mkv' => '1A45DFA393428288', 64 'ws' => '1D7D', 65 'gz' => '1F8B08', 66 'tar.z' => '1FA0', 67 'ain' => '2112', 68 'lib' => '213C617263683E0A', 69 'msi' => 'D0CF11E0A1B11AE1', 70 'vmdk' => '4B444D', 71 'dsp' => '23204D6963726F73', 72 'amr' => '2321414D52', 73 'hdr' => '49536328', 74 'sav' => '24464C3240282329', 75 'eps' => 'C5D0D3C6', 76 'pdf' => '25504446', 77 'fdf' => '25504446', 78 'hqx' => '2854686973206669', 79 'log' => '2A2A2A2020496E73', 80 'ivr' => '2E524543', 81 'rm' => '2E524D46', 82 'rmvb' => '2E524D46', 83 'ra' => '2E7261FD00', 84 'au' => '646E732E', 85 'cat' => '30', 86 'evt' => '300000004C664C65', 87 'asf' => '3026B2758E66CF11', 88 'wma' => '3026B2758E66CF11', 89 'wmv' => '3026B2758E66CF11', 90 'wri' => 'BE000000AB', 91 '7z' => '377ABCAF271C', 92 'psd' => '38425053', 93 'sle' => '414376', 94 'asx' => '3C', 95 'xdr' => '3C', 96 'dci' => '3C21646F63747970', 97 'manifest' => '3C3F786D6C2076657273696F6E3D', 98 'xml' => '3C3F786D6C2076657273696F6E3D22312E30223F3E', 99 'msc' => 'D0CF11E0A1B11AE1', 100 'fm' => '3C4D616B65724669', 101 'mif' => '56657273696F6E20', 102 'gid' => '4C4E0200', 103 'hlp' => '4C4E0200', 104 'dwg' => '41433130', 105 'syw' => '414D594F', 106 'abi' => '414F4C494E444558', 107 'aby' => '414F4C4442', 108 'bag' => '414F4C2046656564', 109 'idx' => '5000000020000000', 110 'ind' => '414F4C494458', 111 'pfc' => '414F4C564D313030', 112 'org' => '414F4C564D313030', 113 'vcf' => '424547494E3A5643', 114 'bin' => '424C4932323351', 115 'bmp' => '424D', 116 'dib' => '424D', 117 'prc' => '424F4F4B4D4F4249', 118 'bz2' => '425A68', 119 'tar.bz2' => '425A68', 120 'tbz2' => '425A68', 121 'tb2' => '425A68', 122 'rtd' => '43232B44A4434DA5', 123 'cbd' => '434246494C45', 124 'iso' => '4344303031', 125 'clb' => '434F4D2B', 126 'cpt' => '43505446494C45', 127 'cru' => '43525553482076', 128 'swf' => '465753', 129 'ctf' => '436174616C6F6720', 130 'dms' => '444D5321', 131 'adf' => '5245564E554D3A2C', 132 'dvr' => '445644', 133 'ifo' => '445644', 134 'cdr' => '52494646', 135 'vcd' => '454E545259564344', 136 'e01' => '4C5646090D0AFF00', 137 'evtx' => '456C6646696C6500', 138 'qbb' => '458600000600', 139 'cpe' => '464158434F564552', 140 'flv' => '464C56', 141 'aiff' => '464F524D00', 142 'eml' => '582D', 143 'gif' => '47494638', 144 'pat' => '47504154', 145 'gx2' => '475832', 146 'sh3' => '4848474231', 147 'tif' => '4D4D002B', 148 'tiff' => '4D4D002B', 149 'mp3' => '494433', 150 'koz' => '49443303000000', 151 'crw' => '49491A0000004845', 152 'cab' => '4D534346', 153 'lit' => '49544F4C49544C53', 154 'chi' => '49545346', 155 'chm' => '49545346', 156 'jar' => '5F27A889', 157 'jg' => '4A47040E000000', 158 'kgb' => '4B47425F61726368', 159 'shd' => '68490000', 160 'lnk' => '4C00000001140200', 161 'obj' => '80', 162 'pdb' => 'ACED000573720012', 163 'mar' => '4D41723000', 164 'dmp' => '504147454455', 165 'hdmp' => '4D444D5093A7', 166 'mls' => '4D563243', 167 'mmf' => '4D4D4D440000', 168 'nvram' => '4D52564E', 169 'ppz' => '4D534346', 170 'snp' => '4D534346', 171 'tlb' => '4D53465402000100', 172 'dvf' => '4D535F564F494345', 173 'msv' => '4D535F564F494345', 174 'mid' => '4D546864', 175 'midi' => '4D546864', 176 'dsn' => '4D56', 177 'com' => 'EB', 178 'dll' => '4D5A', 179 'drv' => '4D5A', 180 'exe' => '4D5A', 181 'pif' => '4D5A', 182 'qts' => '4D5A', 183 'qtx' => '4D5A', 184 'sys' => 'FFFFFFFF', 185 'acm' => '4D5A', 186 'ax' => '4D5A900003000000', 187 'cpl' => 'DCDC', 188 'fon' => '4D5A', 189 'ocx' => '4D5A', 190 'olb' => '4D5A', 191 'scr' => '4D5A', 192 'vbx' => '4D5A', 193 'vxd' => '4D5A', 194 '386' => '4D5A', 195 'api' => '4D5A900003000000', 196 'flt' => '76323030332E3130', 197 'zap' => '4D5A90000300000004000000FFFF', 198 'sln' => '4D6963726F736F66742056697375616C', 199 'jnt' => '4E422A00', 200 'jtp' => '4E422A00', 201 'cod' => '4E616D653A20', 202 'dbf' => '4F504C4461746162', 203 'oga' => '4F67675300020000', 204 'ogg' => '4F67675300020000', 205 'ogv' => '4F67675300020000', 206 'ogx' => '4F67675300020000', 207 'dw4' => '4F7B', 208 'pgm' => '50350A', 209 'pax' => '504158', 210 'pgd' => '504750644D41494E', 211 'img' => 'EB3C902A', 212 'zip' => '504B0304140000', 213 'docx' => '504B030414000600', 214 'pptx' => '504B030414000600', 215 'xlsx' => '504B030414000600', 216 'kwd' => '504B0304', 217 'odt' => '504B0304', 218 'odp' => '504B0304', 219 'ott' => '504B0304', 220 'sxc' => '504B0304', 221 'sxd' => '504B0304', 222 'sxi' => '504B0304', 223 'sxw' => '504B0304', 224 'wmz' => '504B0304', 225 'xpi' => '504B0304', 226 'xps' => '504B0304', 227 'xpt' => '5850434F4D0A5479', 228 'grp' => '504D4343', 229 'qemu' => '514649', 230 'abd' => '5157205665722E20', 231 'qsd' => '5157205665722E20', 232 'reg' => 'FFFE', 233 'sud' => '52454745444954', 234 'ani' => '52494646', 235 'cmx' => '52494646', 236 'ds4' => '52494646', 237 '4xm' => '52494646', 238 'avi' => '52494646', 239 'cda' => '52494646', 240 'qcp' => '52494646', 241 'rmi' => '52494646', 242 'wav' => '52494646', 243 'cap' => '58435000', 244 'rar' => '526172211A0700', 245 'ast' => '5343486C', 246 'shw' => '53484F57', 247 'cpi' => 'FF464F4E54', 248 'sit' => '5374756666497420', 249 'sdr' => '534D415254445257', 250 'cnv' => '53514C4F434F4E56', 251 'cal' => 'B5A2B0B3B3B0A5B5', 252 'info' => 'E310000100000000', 253 'uce' => '55434558', 254 'ufa' => '554641C6D2C1', 255 'pch' => '564350434830', 256 'ctl' => '56455253494F4E20', 257 'ws2' => '575332303030', 258 'lwp' => '576F726450726F', 259 'bdr' => '5854', 260 'zoo' => '5A4F4F20', 261 'ecf' => '5B47656E6572616C', 262 'vcw' => '5B4D535643', 263 'dun' => '5B50686F6E655D', 264 'sam' => '5B7665725D', 265 'cpx' => '5B57696E646F7773', 266 'cfg' => '5B666C7473696D2E', 267 'cas' => '5F434153455F', 268 'cbk' => '5F434153455F', 269 'arj' => '60EA', 270 'vhd' => '636F6E6563746978', 271 'csh' => '6375736800000002', 272 'p10' => '64000000', 273 'dex' => '6465780A30303900', 274 'dsw' => '64737766696C65', 275 'flac' => '664C614300000022', 276 'dbb' => '6C33336C', 277 'acd' => '72696666', 278 'ram' => '727473703A2F2F', 279 'dmg' => '78', 280 'lgc' => '7B0D0A6F20', 281 'lgd' => '7B0D0A6F20', 282 'pwi' => '7B5C707769', 283 'rtf' => '7B5C72746631', 284 'psp' => '7E424B00', 285 'wab' => '9CCBCB8D1375D211', 286 'wpf' => '81CDAB', 287 'png' => '89504E470D0A1A0A', 288 'aw' => '8A0109000000E108', 289 'hap' => '91334846', 290 'skr' => '9501', 291 'gpg' => '99', 292 'pkr' => '9901', 293 'qdf' => 'AC9EBD8F0000', 294 'pwl' => 'E3828596', 295 'dcx' => 'B168DE3A', 296 'tib' => 'B46E6844', 297 'acs' => 'C3ABCDAB', 298 'lbk' => 'C8007900', 299 'class' => 'CAFEBABE', 300 'dbx' => 'CFAD12FE', 301 'dot' => 'D0CF11E0A1B11AE1', 302 'pps' => 'D0CF11E0A1B11AE1', 303 'ppt' => 'D0CF11E0A1B11AE1', 304 'xla' => 'D0CF11E0A1B11AE1', 305 'xls' => 'D0CF11E0A1B11AE1', 306 'wiz' => 'D0CF11E0A1B11AE1', 307 'ac_' => 'D0CF11E0A1B11AE1', 308 'adp' => 'D0CF11E0A1B11AE1', 309 'apr' => 'D0CF11E0A1B11AE1', 310 'mtw' => 'D0CF11E0A1B11AE1', 311 'opt' => 'D0CF11E0A1B11AE1', 312 'pub' => 'D0CF11E0A1B11AE1', 313 'rvt' => 'D0CF11E0A1B11AE1', 314 'sou' => 'D0CF11E0A1B11AE1', 315 'spo' => 'D0CF11E0A1B11AE1', 316 'vsd' => 'D0CF11E0A1B11AE1', 317 'wps' => 'D0CF11E0A1B11AE1', 318 'ftr' => 'D20A0000', 319 'arl' => 'D42A', 320 'aut' => 'D42A', 321 'wmf' => 'D7CDC69A', 322 'efx' => 'DCFE', 323 'one' => 'E4525C7B8CD8A74D', 324 'rpm' => 'EDABEEDB', 325 'gho' => 'FEEF', 326 'ghs' => 'FEEF', 327 'wp' => 'FF575043', 328 'wpd' => 'FF575043', 329 'wpg' => 'FF575043', 330 'wpp' => 'FF575043', 331 'wp5' => 'FF575043', 332 'wp6' => 'FF575043', 333 'jfif' => 'FFD8FF', 334 'jpe' => 'FFD8FF', 335 'jpeg' => 'FFD8FF', 336 'jpg' => 'FFD8FF', 337 'mof' => 'FFFE23006C006900', 338 'ipa' => '504B03040A' 339 ]; 340 341 342 private $_allow_format=[]; 343 344 /*设置允许通过的格式*/ 345 public function allow($allow_format=[]) 346 { 347 if(!empty($allow_format)) 348 $this->_allow_format=$allow_format; 349 } 350 351 /*根据长度读取文件二进制内容*/ 352 public function readHead($filepath,$size) 353 { 354 $fh=fopen($filepath,'rb'); 355 $bin=fread($fh,$size); 356 fclose($fh); 357 return $bin; 358 } 359 360 /*检查格式*/ 361 public function check($filepath,$allow_format=[]) 362 { 363 $_allow_format=empty($allow_format)?$this->_allow_format:$allow_format; 364 if(empty($filepath)) 365 return false; 366 367 if(!empty($_allow_format)) 368 { 369 foreach($_allow_format as $fm) 370 { 371 if(!isset($this->_format[$fm])) 372 continue; 373 $len=strlen($this->_format[$fm]); 374 $binHead=$this->readHead($filepath,$len); 375 $fileHead=unpack('H'.$len,$binHead); 376 377 if(strtoupper($fileHead[1])==$this->_format[$fm]) 378 return $fm; 379 } 380 } 381 else 382 { 383 foreach($this->_format as $fm=>$fbinhead) 384 { 385 $len=strlen($fbinhead); 386 $binHead=$this->readHead($filepath,$len); 387 $fileHead=unpack('H'.$len,$binHead); 388 if(strtoupper($fileHead[1])==$fbinhead) 389 return $fm; 390 } 391 } 392 return false; 393 } 394 }