PHP给源代码加密的几种方法汇总(推荐)

虽说分享是传统的美德，但我们有时候辛辛苦苦写一些程序只是为了卖点小钱，挣点辛苦费

虽说分享是传统的美德，但我们有时候辛辛苦苦写一些程序只是为了卖点小钱，挣点辛苦费，也防止有些没有道德的人倒卖，所以我们不得不对我们的程序进行加密，以下我们来介绍一下如何通过PHP的自定义函数来加密我们的PHP源代码。

第一个方法

<?php 
 function encode_file_contents($filename) { 
 $type=strtolower(substr(strrchr($filename,'.'),1)); 
 if ('php' == $type && is_file($filename) && is_writable($filename)) { // 如果是PHP文件 并且可写 则进行压缩编码 
 $contents = file_get_contents($filename); // 判断文件是否已经被编码处理 
 $contents = php_strip_whitespace($filename); 
 
 // 去除PHP头部和尾部标识 
 $headerPos = strpos($contents,'<?php'); 
 $footerPos = strrpos($contents,'?>'); 
 $contents = substr($contents, $headerPos + 5, $footerPos - $headerPos); 
 $encode = base64_encode(gzdeflate($contents)); // 开始编码 
 $encode = '<?php'."\n eval(gzinflate(base64_decode("."'".$encode."'".")));\n\n?>"; 
 
 return file_put_contents($filename, $encode); 
 } 
 return false; 
 } 
 
 //调用函数 
 $filename = 'dam.php'; 
 encode_file_contents($filename); 
 echo "OK,加密完成！" 
 ?>

第二个方法

<?php 
 
 function RandAbc($length = "") { // 返回随机字符串 
 $str = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; 
 return str_shuffle($str); 
 } 
 
 $filename = 'index.php'; //要加密的文件 
 $T_k1 = RandAbc(); //随机密匙1 
 $T_k2 = RandAbc(); //随机密匙2 
 $vstr = file_get_contents($filename); 
 $v1 = base64_encode($vstr); 
 $c = strtr($v1, $T_k1, $T_k2); //根据密匙替换对应字符。 
 $c = $T_k1.$T_k2.$c; 
 $q1 = "O00O0O"; 
 $q2 = "O0O000"; 
 $q3 = "O0OO00"; 
 $q4 = "OO0O00"; 
 $q5 = "OO0000"; 
 $q6 = "O00OO0"; 
 $s = '$'.$q6.'=urldecode("%6E1%7A%62%2F%6D%615%5C%76%740%6928%2D%70%78%75%71%79%2A6%6C%72%6B%64%679%5F%65%68%63%73%77%6F4%2B%6637%6A");$'.$q1.'=$'.$q6.'{3}.$'.$q6.'{6}.$'.$q6.'{33}.$'.$q6.'{30};$'.$q3.'=$'.$q6.'{33}.$'.$q6.'{10}.$'.$q6.'{24}.$'.$q6.'{10}.$'.$q6.'{24};$'.$q4.'=$'.$q3.'{0}.$'.$q6.'{18}.$'.$q6.'{3}.$'.$q3.'{0}.$'.$q3.'{1}.$'.$q6.'{24};$'.$q5.'=$'.$q6.'{7}.$'.$q6.'{13};$'.$q1.'.=$'.$q6.'{22}.$'.$q6.'{36}.$'.$q6.'{29}.$'.$q6.'{26}.$'.$q6.'{30}.$'.$q6.'{32}.$'.$q6.'{35}.$'.$q6.'{26}.$'.$q6.'{30};eval($'.$q1.'("'.base64_encode('$'.$q2.'="'.$c.'";eval(\'?>\'.$'.$q1.'($'.$q3.'($'.$q4.'($'.$q2.',$'.$q5.'*2),$'.$q4.'($'.$q2.',$'.$q5.',$'.$q5.'),$'.$q4.'($'.$q2.',0,$'.$q5.'))));').'"));'; 
 
 $s = '<?php '."\n".$s."\n".' ?>'; 
 //echo $s; 
 // 生成 加密后的PHP文件 
 $fpp1 = fopen('temp_'.$filename, 'w'); 
 fwrite($fpp1, $s) or die('写文件错误'); 
 
 ?>

第三个方法

<?php 
 
 class text_auth 
 { 
 var $n_iter; 
 
 function text_auth() 
 { 
 $this->setIter(32); 
 } 
 
 function setIter($n_iter) 
 { 
 $this->n_iter = $n_iter; 
 } 
 
 function getIter() 
 { 
 return $this->n_iter; 
 } 
 
 function encrypt($data, $key) 
 { 
 $n = $this->_resize($data, 4); 
 
 $data_long[0] = $n; 
 $n_data_long = $this->_str2long(1, $data, $data_long); 
 
 $n = count($data_long); 
 if (($n & 1) == 1) { 
 $data_long[$n] = chr(0); 
 $n_data_long++; 
 } 
 
 $this->_resize($key, 16, true); 
 if ( '' == $key ) 
 $key = '0000000000000000'; 
 
 $n_key_long = $this->_str2long(0, $key, $key_long); 
 
 $enc_data = ''; 
 $w = array(0, 0); 
 $j = 0; 
 $k = array(0, 0, 0, 0); 
 for ($i = 0; $i < $n_data_long; ++$i) { 
 if ($j + 4 <= $n_key_long) { 
 $k[0] = $key_long[$j]; 
 $k[1] = $key_long[$j + 1]; 
 $k[2] = $key_long[$j + 2]; 
 $k[3] = $key_long[$j + 3]; 
 } else { 
 $k[0] = $key_long[$j % $n_key_long]; 
 $k[1] = $key_long[($j + 1) % $n_key_long]; 
 $k[2] = $key_long[($j + 2) % $n_key_long]; 
 $k[3] = $key_long[($j + 3) % $n_key_long]; 
 } 
 $j = ($j + 4) % $n_key_long; 
 
 $this->_encipherLong($data_long[$i], $data_long[++$i], $w, $k); 
 
 $enc_data .= $this->_long2str($w[0]); 
 $enc_data .= $this->_long2str($w[1]); 
 } 
 
 return $enc_data; 
 } 
 
 function decrypt($enc_data, $key) 
 { 
 $n_enc_data_long = $this->_str2long(0, $enc_data, $enc_data_long); 
 
 $this->_resize($key, 16, true); 
 if ( '' == $key ) 
 $key = '0000000000000000'; 
 
 $n_key_long = $this->_str2long(0, $key, $key_long); 
 
 $data = ''; 
 $w = array(0, 0); 
 $j = 0; 
 $len = 0; 
 $k = array(0, 0, 0, 0); 
 $pos = 0; 
 
 for ($i = 0; $i < $n_enc_data_long; $i += 2) { 
 if ($j + 4 <= $n_key_long) { 
 $k[0] = $key_long[$j]; 
 $k[1] = $key_long[$j + 1]; 
 $k[2] = $key_long[$j + 2]; 
 $k[3] = $key_long[$j + 3]; 
 } else { 
 $k[0] = $key_long[$j % $n_key_long]; 
 $k[1] = $key_long[($j + 1) % $n_key_long]; 
 $k[2] = $key_long[($j + 2) % $n_key_long]; 
 $k[3] = $key_long[($j + 3) % $n_key_long]; 
 } 
 $j = ($j + 4) % $n_key_long; 
 
 $this->_decipherLong($enc_data_long[$i], $enc_data_long[$i + 1], $w, $k); 
 
 if (0 == $i) { 
 $len = $w[0]; 
 if (4 <= $len) { 
 $data .= $this->_long2str($w[1]); 
 } else { 
 $data .= substr($this->_long2str($w[1]), 0, $len % 4); 
 } 
 } else { 
 $pos = ($i - 1) * 4; 
 if ($pos + 4 <= $len) { 
 $data .= $this->_long2str($w[0]); 
 
 if ($pos + 8 <= $len) { 
 $data .= $this->_long2str($w[1]); 
 } elseif ($pos + 4 < $len) { 
 $data .= substr($this->_long2str($w[1]), 0, $len % 4); 
 } 
 } else { 
 $data .= substr($this->_long2str($w[0]), 0, $len % 4); 
 } 
 } 
 } 
 return $data; 
 } 
 
 function _encipherLong($y, $z, &$w, &$k) 
 { 
 $sum = (integer) 0; 
 $delta = 0x9E3779B9; 
 $n = (integer) $this->n_iter; 
 
 while ($n-- > 0) { 
 $y = $this->_add($y, 
 $this->_add($z << 4 ^ $this->_rshift($z, 5), $z) ^ 
 $this->_add($sum, $k[$sum & 3])); 
 $sum = $this->_add($sum, $delta); 
 $z = $this->_add($z, 
 $this->_add($y << 4 ^ $this->_rshift($y, 5), $y) ^ 
 $this->_add($sum, $k[$this->_rshift($sum, 11) & 3])); 
 } 
 
 $w[0] = $y; 
 $w[1] = $z; 
 } 
 
 function _decipherLong($y, $z, &$w, &$k) 
 { 
 $sum = 0xC6EF3720; 
 $delta = 0x9E3779B9; 
 $n = (integer) $this->n_iter; 
 
 while ($n-- > 0) { 
 $z = $this->_add($z, 
 -($this->_add($y << 4 ^ $this->_rshift($y, 5), $y) ^ 
 $this->_add($sum, $k[$this->_rshift($sum, 11) & 3]))); 
 $sum = $this->_add($sum, -$delta); 
 $y = $this->_add($y, 
 -($this->_add($z << 4 ^ $this->_rshift($z, 5), $z) ^ 
 $this->_add($sum, $k[$sum & 3]))); 
 } 
 
 $w[0] = $y; 
 $w[1] = $z; 
 } 
 
 function _resize(&$data, $size, $nonull = false) 
 { 
 $n = strlen($data); 
 $nmod = $n % $size; 
 if ( 0 == $nmod ) 
 $nmod = $size; 
 
 if ($nmod > 0) { 
 if ($nonull) { 
 for ($i = $n; $i < $n - $nmod + $size; ++$i) { 
 $data[$i] = $data[$i % $n]; 
 } 
 } else { 
 for ($i = $n; $i < $n - $nmod + $size; ++$i) { 
 $data[$i] = chr(0); 
 } 
 } 
 } 
 return $n; 
 } 
 
 function _hex2bin($str) 
 { 
 $len = strlen($str); 
 return pack('H' . $len, $str); 
 } 
 
 function _str2long($start, &$data, &$data_long) 
 { 
 $n = strlen($data); 
 
 $tmp = unpack('N*', $data); 
 $j = $start; 
 
 foreach ($tmp as $value) 
 $data_long[$j++] = $value; 
 
 return $j; 
 } 
 
 function _long2str($l) 
 { 
 return pack('N', $l); 
 } 
 
 function _rshift($integer, $n) 
 { 
 if (0xffffffff < $integer || -0xffffffff > $integer) { 
 $integer = fmod($integer, 0xffffffff + 1); 
 } 
 
 if (0x7fffffff < $integer) { 
 $integer -= 0xffffffff + 1.0; 
 } elseif (-0x80000000 > $integer) { 
 $integer += 0xffffffff + 1.0; 
 } 
 
 if (0 > $integer) { 
 $integer &= 0x7fffffff; 
 $integer >>= $n; 
 $integer |= 1 << (31 - $n); 
 } else { 
 $integer >>= $n; 
 } 
 
 return $integer; 
 } 
 
 function _add($i1, $i2) 
 { 
 $result = 0.0; 
 
 foreach (func_get_args() as $value) { 
 if (0.0 > $value) { 
 $value -= 1.0 + 0xffffffff; 
 } 
 
 $result += $value; 
 } 
 
 if (0xffffffff < $result || -0xffffffff > $result) { 
 $result = fmod($result, 0xffffffff + 1); 
 } 
 
 if (0x7fffffff < $result) { 
 $result -= 0xffffffff + 1.0; 
 } elseif (-0x80000000 > $result) { 
 $result += 0xffffffff + 1.0; 
 } 
 return $result; 
 } 
 } 
 ?> 
使用方法参考如下：
// 加密过程
view sourceprint?
 $text_file = S_ROOT . './456.php'; 
 $str = @file_get_contents($text_file); 
 
 require_once S_ROOT . "./text_auth.php"; 
 $text_auth = new text_auth(64); 
 
 $str = $text_auth->encrypt($str, "qianyunlai.com"); 
 
 $filename = S_ROOT . './789.php'; // 加密后的文本为二进制，普通的文本编辑器无法正常查看 
 file_put_contents($filename, $str); 
// 解密过程
view sourceprint
?01 $text_file = S_ROOT . './789.php'; 
 $str = @file_get_contents($text_file); 
 
 require_once S_ROOT . "./text_auth.php"; 
 $text_auth = new text_auth(64); 
 
 $str = $text_auth->decrypt($str, "qianyunlai.com"); 
 
 $filename = S_ROOT . './456.php'; 
 file_put_contents($filename, $str);

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PHP 源代码 加密