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鸽子
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865天前$files = array ( |
'c:\1.jpg', |
'c:\1.png', |
'c:\1.gif', |
'c:\1.rar', |
'c:\1.zip', |
'c:\1.exe', |
); |
foreach ( $files AS $file ) |
{ |
$fp = fopen ( $file, "rb" ); |
$bin = fread ( $fp, 2 ); //只读2字节 |
fclose ( $fp ); |
$str_info = @unpack ( "C2chars", $bin ); |
$type_code = intval ( $str_info['chars1'].$str_info['chars2'] ); |
$file_type = ''; |
switch ( $type_code ) |
{ |
case 7790: |
$file_type = 'exe'; |
break; |
case 7784: |
$file_type = 'midi'; |
break; |
case 8075: |
$file_type = 'zip'; |
break; |
case 8297: |
$file_type = 'rar'; |
break; |
case 255216: |
$file_type = 'jpg'; |
break; |
case 7173: |
$file_type = 'gif'; |
break; |
case 6677: |
$file_type = 'bmp'; |
break; |
case 13780: |
$file_type = 'png'; |
break; |
default: |
$file_type = 'unknown'; |
break; |
} |
echo $file , ' type: ', $file_type, ' code:', $type_code, ' |
'; |
} |
