PHP 基于文件头的文件类型验证类函数

<?php
/**
* 检证文件类型类
*
* @author Silver
*/
class FileTypeValidation
{
// 文件类型，不同的头信息
private static $_fileFormats = Array(
jp2 => 0000000C6A502020,<br/> 3gp => 0000002066747970,
3gp5 => 0000001866747970,
m4a => 00000020667479704D3441,
ico => 00000100,
spl => 00000100,
vob => 000001BA,
cur => 00000200,
wb2 => 00000200,
wk1 => 0000020006040600,
wk3 => 00001A0000100400,
wk4 => 00001A0002100400,
wk5 => 00001A0002100400,
123 => 00001A00051004,
qxd => 00004D4D585052,
mdf => 010F0000,
tr1 => 0110,
rgb => 01DA01010003,
drw => 07,
dss => 02647373,
dat => A90D000000000000,
db3 => 03,
qph => 03000000,
adx => 80000020031204,
db4 => 04,
n => FFFE0000,
a => FFFE0000,
skf => 07534B46,
dtd => 0764743264647464,
db => D0CF11E0A1B11AE1,
pcx => 0A050101,
mp => 0CED,
doc => D0CF11E0A1B11AE1,
nri => 0E4E65726F49534F,
wks => FF00020004040554,
pf => 1100000053434341,
ntf => 4E49544630,
nsf => 4E45534D1A01,
arc => 41724301,
pak => 5041434B,
eth => 1A350100,
mkv => 1A45DFA393428288,
ws => 1D7D,
gz => 1F8B08,
tar.z => 1FA0,
ain => 2112,
lib => 213C617263683E0A,
msi => D0CF11E0A1B11AE1,
vmdk => 4B444D,
dsp => 23204D6963726F73,
amr => 2321414D52,
hdr => 49536328,
sav => 24464C3240282329,
eps => C5D0D3C6,
pdf => 25504446,
fdf => 25504446,
hqx => 2854686973206669,
log => 2A2A2A2020496E73,
ivr => 2E524543,
rm => 2E524D46,
rmvb => 2E524D46,
ra => 2E7261FD00,
au => 646E732E,
cat => 30,
evt => 300000004C664C65,
asf => 3026B2758E66CF11,
wma => 3026B2758E66CF11,
wmv => 3026B2758E66CF11,
wri => BE000000AB,
7z => 377ABCAF271C,
psd => 38425053,
sle => 414376,
asx => 3C,
xdr => 3C,
dci => 3C21646F63747970,
manifest => 3C3F786D6C2076657273696F6E3D,
xml => 3C3F786D6C2076657273696F6E3D22312E30223F3E,
msc => D0CF11E0A1B11AE1,
fm => 3C4D616B65724669,
mif => 56657273696F6E20,
gid => 4C4E0200,
hlp => 4C4E0200,
dwg => 41433130,
syw => 414D594F,
abi => 414F4C494E444558,
aby => 414F4C4442,
bag => 414F4C2046656564,
idx => 5000000020000000,
ind => 414F4C494458,
pfc => 414F4C564D313030,
org => 414F4C564D313030,
vcf => 424547494E3A5643,
bin => 424C4932323351,
bmp => 424D,
dib => 424D,
prc => 424F4F4B4D4F4249,
bz2 => 425A68,
tar.bz2 => 425A68,
tbz2 => 425A68,
tb2 => 425A68,
rtd => 43232B44A4434DA5,
cbd => 434246494C45,
iso => 4344303031,
clb => 434F4D2B,
cpt => 43505446494C45,
cru => 43525553482076,
swf => 465753,
ctf => 436174616C6F6720,
dms => 444D5321,
adf => 5245564E554D3A2C,
dvr => 445644,
ifo => 445644,
cdr => 52494646,
vcd => 454E545259564344,
mdi => 4550,
e01 => 4C5646090D0AFF00,
evtx => 456C6646696C6500,
qbb => 458600000600,
cpe => 464158434F564552,
flv => 464C56,
aiff => 464F524D00,
eml => 582D,
gif => 47494638,
pat => 47504154,
gx2 => 475832,
sh3 => 4848474231,
tif => 4D4D002B,
tiff => 4D4D002B,
mp3 => 494433,
koz => 49443303000000,
crw => 49491A0000004845,
cab => 4D534346,
lit => 49544F4C49544C53,
chi => 49545346,
chm => 49545346,
jar => 5F27A889,
jg => 4A47040E000000,
kgb => 4B47425F61726368,
shd => 68490000,
lnk => 4C00000001140200,
obj => 80,
pdb => ACED000573720012,
mar => 4D41723000,
dmp => 504147454455,
hdmp => 4D444D5093A7,
mls => 4D563243,
mmf => 4D4D4D440000,
nvram => 4D52564E,
ppz => 4D534346,
snp => 4D534346,
tlb => 4D53465402000100,
dvf => 4D535F564F494345,
msv => 4D535F564F494345,
mid => 4D546864,
midi => 4D546864,
dsn => 4D56,
com => EB,
dll => 4D5A,
drv => 4D5A,
exe => 4D5A,
pif => 4D5A,
qts => 4D5A,
qtx => 4D5A,
sys => FFFFFFFF,
acm => 4D5A,
ax => 4D5A900003000000,
cpl => DCDC,
fon => 4D5A,
ocx => 4D5A,
olb => 4D5A,
scr => 4D5A,
vbx => 4D5A,
vxd => 4D5A,
386 => 4D5A,
api => 4D5A900003000000,
flt => 76323030332E3130,
zap => 4D5A90000300000004000000FFFF,
sln => 4D6963726F736F66742056697375616C,
jnt => 4E422A00,
jtp => 4E422A00,
cod => 4E616D653A20,
dbf => 4F504C4461746162,
oga => 4F67675300020000,
ogg => 4F67675300020000,
ogv => 4F67675300020000,
ogx => 4F67675300020000,
dw4 => 4F7B,
pgm => 50350A,
pax => 504158,
pgd => 504750644D41494E,
img => EB3C902A,
zip => 504B0304140000,
docx => 504B030414000600,
pptx => 504B030414000600,
xlsx => 504B030414000600,
kwd => 504B0304,
odt => 504B0304,
odp => 504B0304,
ott => 504B0304,
sxc => 504B0304,
sxd => 504B0304,
sxi => 504B0304,
sxw => 504B0304,
wmz => 504B0304,
xpi => 504B0304,
xps => 504B0304,
xpt => 5850434F4D0A5479,
grp => 504D4343,
qemu => 514649,
abd => 5157205665722E20,
qsd => 5157205665722E20,
reg => FFFE,
sud => 52454745444954,
ani => 52494646,
cmx => 52494646,
ds4 => 52494646,
4xm => 52494646,
avi => 52494646,
cda => 52494646,
qcp => 52494646,
rmi => 52494646,
wav => 52494646,
cap => 58435000,
rar => 526172211A0700,
ast => 5343486C,
shw => 53484F57,
cpi => FF464F4E54,
sit => 5374756666497420,
sdr => 534D415254445257,
cnv => 53514C4F434F4E56,
cal => B5A2B0B3B3B0A5B5,
info => E310000100000000,
uce => 55434558,
ufa => 554641C6D2C1,
pch => 564350434830,
ctl => 56455253494F4E20,
ws2 => 575332303030,
lwp => 576F726450726F,
bdr => 5854,
zoo => 5A4F4F20,
ecf => 5B47656E6572616C,
vcw => 5B4D535643,
dun => 5B50686F6E655D,
sam => 5B7665725D,
cpx => 5B57696E646F7773,
cfg => 5B666C7473696D2E,
cas => 5F434153455F,
cbk => 5F434153455F,
arj => 60EA,
vhd => 636F6E6563746978,
csh => 6375736800000002,
p10 => 64000000,
dex => 6465780A30303900,
dsw => 64737766696C65,
flac => 664C614300000022,
dbb => 6C33336C,
acd => 72696666,
ram => 727473703A2F2F,
dmg => 78,
lgc => 7B0D0A6F20,
lgd => 7B0D0A6F20,
pwi => 7B5C707769,
rtf => 7B5C72746631,
psp => 7E424B00,
wab => 9CCBCB8D1375D211,
wpf => 81CDAB,
png => 89504E470D0A1A0A,
aw => 8A0109000000E108,
hap => 91334846,
skr => 9501,
gpg => 99,
pkr => 9901,
qdf => AC9EBD8F0000,
pwl => E3828596,
dcx => B168DE3A,
tib => B46E6844,
acs => C3ABCDAB,
lbk => C8007900,
class => CAFEBABE,
dbx => CFAD12FE,
dot => D0CF11E0A1B11AE1,
pps => D0CF11E0A1B11AE1,
ppt => D0CF11E0A1B11AE1,
xla => D0CF11E0A1B11AE1,
xls => D0CF11E0A1B11AE1,
wiz => D0CF11E0A1B11AE1,
ac_ => D0CF11E0A1B11AE1,
adp => D0CF11E0A1B11AE1,
apr => D0CF11E0A1B11AE1,
mtw => D0CF11E0A1B11AE1,
opt => D0CF11E0A1B11AE1,
pub => D0CF11E0A1B11AE1,
rvt => D0CF11E0A1B11AE1,
sou => D0CF11E0A1B11AE1,
spo => D0CF11E0A1B11AE1,
vsd => D0CF11E0A1B11AE1,
wps => D0CF11E0A1B11AE1,
ftr => D20A0000,
arl => D42A,
aut => D42A,
wmf => D7CDC69A,
efx => DCFE,
one => E4525C7B8CD8A74D,
rpm => EDABEEDB,
gho => FEEF,
ghs => FEEF,
wp => FF575043,
wpd => FF575043,
wpg => FF575043,
wpp => FF575043,
wp5 => FF575043,
wp6 => FF575043,
jfif => FFD8FF,
jpe => FFD8FF,
jpeg => FFD8FF,
jpg => FFD8FF,
mof => FFFE23006C006900,
ipa => 504B03040A,
);
/**
* 检查文件类型
*
* @param string $filePath 文件路径
* @param string $fileExt 文件扩展名
*
* @return boolean
*/
public static function validation($filePath, $fileExt)
{
// 文件格式未知
if (!isset(self::$_fileFormats[$fileExt]))
{
return false;
}
$length = strlen(self::$_fileFormats[$fileExt]);
$bin = self::_readFile($filePath, $length);
$fileHead = @unpack("H{$length}", $bin);
// 判断文件头
if (strtolower(self::$_fileFormats[$fileExt]) == $fileHead[1])
{
return true;
}
return false;
}
/**
* 读取文件内容
*
* @param string $filePath 文件路径
* @param integer $size
*
* @return string
*/
private function _readFile($filePath, $size)
{
$file = fopen($filePath, "rb");
$bin = fread($file, $size);
fclose($file);
return $bin;
}
}
?>

require ./class_filetypevalidation.php;
// 文件路径
$filePath = "D:/test.png";
$x = FileTypeValidation::validation($filePath, zip);
var_dump($x);