<code>以下为引用的内容：<br /> //PHP_md5("字符串")<br />define("BITS_TO_A_BYTE",8);<br />define("BYTES_TO_A_WORD",4);<br />define("BITS_TO_A_WORD",32);<br />$m_lOnBits=array(30);<br />$m_l2Power=array(30);<br /> function LShift($lValue,$iShiftBits)<br />{<br /> if ($iShiftBits==0) return $lValue;<br /> if ($iShiftBits==31)<br /> {<br /> if ($lValue&1) { return 0x80000000; }<br /> else { return 0; }<br /> }<br /> if ($iShiftBits < 0 || $iShiftBits > 31) { }<br /> if (($lValue&$GLOBALS[31-$iShiftBits]))<br /> { $tmpstr=(($lValue&$GLOBALS[31-($iShiftBits+1)])*$GLOBALS[$iShiftBits])|0x80000000; }<br /> else<br /> { $tmpstr=(($lValue&$GLOBALS[31-$iShiftBits])*$GLOBALS[$iShiftBits]); }<br /> return $tmpstr;<br />}<br /> function RShift($lValue,$iShiftBits)<br />{<br /> if ($iShiftBits==0)return $lValue;<br /> if ($iShiftBits==31)<br /> {<br /> if ($lValue&0x80000000) { return 1; }<br /> else { return 0; }<br /> }<br /> if ($iShiftBits<0 || $iShiftBits>31) { }<br /> $tmpstr=floor(($lValue&0x7FFFFFFE)/$GLOBALS[$iShiftBits]);<br /> if ($lValue&0x80000000) { $tmpstr=$tmpstr|floor(0x40000000/$GLOBALS[$iShiftBits-1]); }<br /> return $tmpstr;<br />}<br /> function RotateLeft($lValue,$iShiftBits)<br />{<br /> return LShift($lValue,$iShiftBits)|RShift($lValue,(32-$iShiftBits));<br />} <br /> function AddUnsigned($lX,$lY)<br />{<br /> $lX8=$lX&0x80000000;<br /> $lY8=$lY&0x80000000;<br /> $lX4=$lX&0x40000000;<br /> $lY4=$lY&0x40000000;<br /> $lResult=($lX&0x3FFFFFFF)+($lY&0x3FFFFFFF); <br /> if ($lX4&$lY4) { $lResult=$lResult^0x80000000^$lX8^$lY8; }<br /> if ($lX4|$lY4)<br /> {<br /> if ($lResult&0x40000000)<br /> { $lResult=$lResult^0xC0000000^$lX8^$lY8; }<br /> else<br /> { $lResult=$lResult^0x40000000^$lX8^$lY8; }<br /> }<br /> else<br /> { $lResult=$lResult^$lX8^$lY8; }<br /> return $lResult;<br />} <br /> function md5_F($x,$y,$z)<br />{<br /> return ($x&$y)|((~$x)&$z);<br />}<br /> function md5_G($x,$y,$z)<br />{<br /> return ($x&$z)|($y&(~$z));<br />}<br /> function md5_H($x,$y,$z)<br />{<br /> return ($x^$y^$z);<br />} <br /> function md5_I($x,$y,$z)<br />{<br /> return ($y^($x|(~$z)));<br />} <br /> function md5_FF(&$a,$b,$c,$d,$x,$s,$ac)<br />{<br /> $a=AddUnsigned($a,AddUnsigned(AddUnsigned(md5_F($b,$c,$d),$x),$ac));<br /> $a=RotateLeft($a,$s);<br /> $a=AddUnsigned($a,$b);<br />} <br /> function md5_GG(&$a,$b,$c,$d,$x,$s,$ac)<br />{<br /> $a=AddUnsigned($a,AddUnsigned(AddUnsigned(md5_G($b,$c,$d),$x),$ac));<br /> $a=RotateLeft($a,$s);<br /> $a=AddUnsigned($a,$b);<br />}<br /> function md5_HH(&$a,$b,$c,$d,$x,$s,$ac)<br />{<br /> $a=AddUnsigned($a,AddUnsigned(AddUnsigned(md5_H($b,$c,$d),$x),$ac));<br /> $a=RotateLeft($a,$s);<br /> $a=AddUnsigned($a,$b);<br />}<br /> function md5_II(&$a,$b,$c,$d,$x,$s,$ac)<br />{<br /> $a=AddUnsigned($a,AddUnsigned(AddUnsigned(md5_I($b,$c,$d),$x),$ac));<br /> $a=RotateLeft($a,$s);<br /> $a=AddUnsigned($a,$b);<br />} <br /> function ConvertToWordArray($sMessage)<br />{<br /> $lWordArray=array();<br /> $MODULUS_BITS=512;<br /> $CONGRUENT_BITS=448;<br /> $lMessageLength=strlen($sMessage);<br /> $lNumberOfWords=(floor(($lMessageLength+floor(($MODULUS_BITS-$CONGRUENT_BITS)/BITS_TO_A_BYTE))/floor($MODULUS_BITS/BITS_TO_A_BYTE))+1)*floor($MODULUS_BITS/BITS_TO_A_WORD);<br /> $lBytePosition=0;<br /> $lByteCount=0;<br /> while(!($lByteCount>=$lMessageLength))<br /> {<br /> $lWordCount=floor($lByteCount/BYTES_TO_A_WORD);<br /> $lBytePosition=($lByteCount%BYTES_TO_A_WORD)*BITS_TO_A_BYTE; Chinaz@com<br /> $lWordArray[$lWordCount]=$lWordArray[$lWordCount]|LShift(ord(substr($sMessage,$lByteCount+1-1,1)),$lBytePosition);<br /> $lByteCount=$lByteCount+1;<br /> }<br /> $lWordCount=floor($lByteCount/BYTES_TO_A_WORD);<br /> $lBytePosition=($lByteCount%BYTES_TO_A_WORD)*BITS_TO_A_BYTE;<br /> $lWordArray[$lWordCount]=$lWordArray[$lWordCount]|LShift(0x80,$lBytePosition);<br /> $lWordArray[$lNumberOfWords-2]=LShift($lMessageLength,3);<br /> $lWordArray[$lNumberOfWords-1]=RShift($lMessageLength,29);<br /> return $lWordArray;<br />}<br /> function WordToHex($lValue)<br />{<br /> $tmpstr="";<br /> for ($lCount=0; $lCount<=3; $lCount++)<br /> {<br /> $lByte=RShift($lValue,$lCount*BITS_TO_A_BYTE)&$GLOBALS[BITS_TO_A_BYTE-1];<br /> $tmpstr=$tmpstr.(substr("0".dechex($lByte),strlen("0".dechex($lByte))-2));//这行可能有问题<br /> }<br /> return $tmpstr;<br />}<br />function PHP_MD5($sMessage)<br />{<br /> $GLOBALS[0]=intval(1);<br /> $GLOBALS[1]=intval(3);<br /> $GLOBALS[2]=intval(7);<br /> $GLOBALS[3]=intval(15);<br /> $GLOBALS[4]=intval(31);<br /> $GLOBALS[5]=intval(63);<br /> $GLOBALS[6]=intval(127);<br /> $GLOBALS[7]=intval(255);<br /> $GLOBALS[8]=intval(511);<br /> $GLOBALS[9]=intval(1023);<br /> $GLOBALS[10]=intval(2047);<br /> $GLOBALS[11]=intval(4095);<br /> $GLOBALS[12]=intval(8191);<br /> $GLOBALS[13]=intval(16383);<br /> $GLOBALS[14]=intval(32767);<br /> $GLOBALS[15]=intval(65535);<br /> $GLOBALS[16]=intval(131071);<br /> $GLOBALS[17]=intval(262143); <br /> $GLOBALS[18]=intval(524287);<br /> $GLOBALS[19]=intval(1048575);<br /> $GLOBALS[20]=intval(2097151);<br /> $GLOBALS[21]=intval(4194303);<br /> $GLOBALS[22]=intval(8388607);<br /> $GLOBALS[23]=intval(16777215);<br /> $GLOBALS[24]=intval(33554431);<br /> $GLOBALS[25]=intval(67108863);<br /> $GLOBALS[26]=intval(134217727);<br /> $GLOBALS[27]=intval(268435455);<br /> $GLOBALS[28]=intval(536870911);<br /> $GLOBALS[29]=intval(1073741823);<br /> $GLOBALS[30]=intval(2147483647); <br /> $GLOBALS[0]=intval(1);<br /> $GLOBALS[1]=intval(2);<br /> $GLOBALS[2]=intval(4);<br /> $GLOBALS[3]=intval(8);<br /> $GLOBALS[4]=intval(16);<br /> $GLOBALS[5]=intval(32);<br /> $GLOBALS[6]=intval(64);<br /> $GLOBALS[7]=intval(128);<br /> $GLOBALS[8]=intval(256);<br /> $GLOBALS[9]=intval(512);<br /> $GLOBALS[10]=intval(1024);<br /> $GLOBALS[11]=intval(2048);<br /> $GLOBALS[12]=intval(4096);<br /> $GLOBALS[13]=intval(8192); <br /> $GLOBALS[14]=intval(16384);<br /> $GLOBALS[15]=intval(32768);<br /> $GLOBALS[16]=intval(65536);<br /> $GLOBALS[17]=intval(131072);<br /> $GLOBALS[18]=intval(262144);<br /> $GLOBALS[19]=intval(524288);<br /> $GLOBALS[20]=intval(1048576);<br /> $GLOBALS[21]=intval(2097152);<br /> $GLOBALS[22]=intval(4194304);<br /> $GLOBALS[23]=intval(8388608);<br /> $GLOBALS[24]=intval(16777216);<br /> $GLOBALS[25]=intval(33554432);<br /> $GLOBALS[26]=intval(67108864);<br /> $GLOBALS[27]=intval(134217728);<br /> $GLOBALS[28]=intval(268435456);<br /> $GLOBALS[29]=intval(536870912);<br /> $GLOBALS[30]=intval(1073741824); <br /> $S11=7;<br /> $S12=12;<br /> $S13=17;<br /> $S14=22;<br /> $S21=5;<br /> $S22=9;<br /> $S23=14;<br /> $S24=20;<br /> $S31=4;<br /> $S32=11;<br /> $S33=16;<br /> $S34=23;<br /> $S41=6;<br /> $S42=10;<br /> $S43=15;<br /> $S44=21;<br /> $x=ConvertToWordArray($sMessage); <br /> $a=0x67452301;<br /> $b=0xEFCDAB89;<br /> $c=0x98BADCFE;<br /> $d=0x10325476;<br /> for ($k=0; $k<=count($x); $k=$k+16)<br /> {<br /> $AA=$a;<br /> $BB=$b;<br /> $CC=$c;<br /> $DD=$d;<br /> md5_FF($a,$b,$c,$d,$x[$k+0],$S11,0xD76AA478);<br /> md5_FF($d,$a,$b,$c,$x[$k+1],$S12,0xE8C7B756);<br /> md5_FF($c,$d,$a,$b,$x[$k+2],$S13,0x242070DB);<br /> md5_FF($b,$c,$d,$a,$x[$k+3],$S14,0xC1BDCEEE);<br /> md5_FF($a,$b,$c,$d,$x[$k+4],$S11,0xF57C0FAF); <br /> md5_FF($d,$a,$b,$c,$x[$k+5],$S12,0x4787C62A);<br /> md5_FF($c,$d,$a,$b,$x[$k+6],$S13,0xA8304613);<br /> md5_FF($b,$c,$d,$a,$x[$k+7],$S14,0xFD469501);<br /> md5_FF($a,$b,$c,$d,$x[$k+8],$S11,0x698098D8);<br /> md5_FF($d,$a,$b,$c,$x[$k+9],$S12,0x8B44F7AF);<br /> md5_FF($c,$d,$a,$b,$x[$k+10],$S13,0xFFFF5BB1);<br /> md5_FF($b,$c,$d,$a,$x[$k+11],$S14,0x895CD7BE);<br /> md5_FF($a,$b,$c,$d,$x[$k+12],$S11,0x6B901122);<br /> md5_FF($d,$a,$b,$c,$x[$k+13],$S12,0xFD987193);<br /> md5_FF($c,$d,$a,$b,$x[$k+14],$S13,0xA679438E);<br /> md5_FF($b,$c,$d,$a,$x[$k+15],$S14,0x49B40821);<br /> md5_GG($a,$b,$c,$d,$x[$k+1],$S21,0xF61E2562);<br /> md5_GG($d,$a,$b,$c,$x[$k+6],$S22,0xC040B340);<br /> md5_GG($c,$d,$a,$b,$x[$k+11],$S23,0x265E5A51);<br /> md5_GG($b,$c,$d,$a,$x[$k+0],$S24,0xE9B6C7AA);<br /> md5_GG($a,$b,$c,$d,$x[$k+5],$S21,0xD62F105D);<br /> md5_GG($d,$a,$b,$c,$x[$k+10],$S22,0x2441453);<br /> md5_GG($c,$d,$a,$b,$x[$k+15],$S23,0xD8A1E681);<br /> md5_GG($b,$c,$d,$a,$x[$k+4],$S24,0xE7D3FBC8);<br /> md5_GG($a,$b,$c,$d,$x[$k+9],$S21,0x21E1CDE6);<br /> md5_GG($d,$a,$b,$c,$x[$k+14],$S22,0xC33707D6);<br /> md5_GG($c,$d,$a,$b,$x[$k+3],$S23,0xF4D50D87); <br /> md5_GG($b,$c,$d,$a,$x[$k+8],$S24,0x455A14ED);<br /> md5_GG($a,$b,$c,$d,$x[$k+13],$S21,0xA9E3E905);<br /> md5_GG($d,$a,$b,$c,$x[$k+2],$S22,0xFCEFA3F8);<br /> md5_GG($c,$d,$a,$b,$x[$k+7],$S23,0x676F02D9);<br /> md5_GG($b,$c,$d,$a,$x[$k+12],$S24,0x8D2A4C8A);<br /> md5_HH($a,$b,$c,$d,$x[$k+5],$S31,0xFFFA3942);<br /> md5_HH($d,$a,$b,$c,$x[$k+8],$S32,0x8771F681);<br /> md5_HH($c,$d,$a,$b,$x[$k+11],$S33,0x6D9D6122);<br /> md5_HH($b,$c,$d,$a,$x[$k+14],$S34,0xFDE5380C);<br /> md5_HH($a,$b,$c,$d,$x[$k+1],$S31,0xA4BEEA44);<br /> md5_HH($d,$a,$b,$c,$x[$k+4],$S32,0x4BDECFA9);<br /> md5_HH($c,$d,$a,$b,$x[$k+7],$S33,0xF6BB4B60);<br /> md5_HH($b,$c,$d,$a,$x[$k+10],$S34,0xBEBFBC70);<br /> md5_HH($a,$b,$c,$d,$x[$k+13],$S31,0x289B7EC6);<br /> md5_HH($d,$a,$b,$c,$x[$k+0],$S32,0xEAA127FA);<br /> md5_HH($c,$d,$a,$b,$x[$k+3],$S33,0xD4EF3085);<br /> md5_HH($b,$c,$d,$a,$x[$k+6],$S34,0x4881D05);<br /> md5_HH($a,$b,$c,$d,$x[$k+9],$S31,0xD9D4D039);<br /> md5_HH($d,$a,$b,$c,$x[$k+12],$S32,0xE6DB99E5);<br /> md5_HH($c,$d,$a,$b,$x[$k+15],$S33,0x1FA27CF8);<br /> md5_HH($b,$c,$d,$a,$x[$k+2],$S34,0xC4AC5665);<br /> md5_II($a,$b,$c,$d,$x[$k+0],$S41,0xF4292244);<br /> md5_II($d,$a,$b,$c,$x[$k+7],$S42,0x432AFF97);<br /> md5_II($c,$d,$a,$b,$x[$k+14],$S43,0xAB9423A7);<br /> md5_II($b,$c,$d,$a,$x[$k+5],$S44,0xFC93A039);<br /> md5_II($a,$b,$c,$d,$x[$k+12],$S41,0x655B59C3);<br /> md5_II($d,$a,$b,$c,$x[$k+3],$S42,0x8F0CCC92);<br /> md5_II($c,$d,$a,$b,$x[$k+10],$S43,0xFFEFF47D);<br /> md5_II($b,$c,$d,$a,$x[$k+1],$S44,0x85845DD1);<br /> md5_II($a,$b,$c,$d,$x[$k+8],$S41,0x6FA87E4F);<br /> md5_II($d,$a,$b,$c,$x[$k+15],$S42,0xFE2CE6E0);<br /> md5_II($c,$d,$a,$b,$x[$k+6],$S43,0xA3014314); <br /> md5_II($b,$c,$d,$a,$x[$k+13],$S44,0x4E0811A1);<br /> md5_II($a,$b,$c,$d,$x[$k+4],$S41,0xF7537E82);<br /> md5_II($d,$a,$b,$c,$x[$k+11],$S42,0xBD3AF235);<br /> md5_II($c,$d,$a,$b,$x[$k+2],$S43,0x2AD7D2BB);<br /> md5_II($b,$c,$d,$a,$x[$k+9],$S44,0xEB86D391);<br /> $a=AddUnsigned($a,$AA);<br /> $b=AddUnsigned($b,$BB);<br /> $c=AddUnsigned($c,$CC);<br /> $d=AddUnsigned($d,$DD);<br /> }<br /> return strtolower(WordToHex($a).WordToHex($b).WordToHex($c).WordToHex($d)); <br />} <br /> $aaa=PHP_MD5("sdfasdf");<br />echo $aaa;</code></p>