php文件加密解密
<p>利用base64加解密</p><p>base64_encode是加密,而base64_decode是解密</p>
<p><strong>语法:string base64_encode(string data); <strong>语法:string base64_decode(string data);</strong></strong></p>
<p><strong><strong>加密案例如下：</strong></strong></p>
<p>public function encode_file_contents($filename) {<br> $type=strtolower(substr(strrchr($filename,'.'),1));<br> 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 <br> $contents = file_get_contents($filename); // 判断文件是否已经被编码处 理<br> $contents = php_strip_whitespace($filename);<br> // 去除PHP头部和尾部标识 <br> $headerPos = strpos($contents,'<?php');<br> // echo $headerPos.'<br>';<br> //echo $footerPos;//,$footerPos-$headerPos<br> $contents = substr($contents,$headerPos+5);<br> $encode = base64_encode(gzdeflate($contents)); // 开始编码 <br> $encode = '<?php'."\n eval(gzinflate(base64_decode("."'".$encode."'".")));\n\n?>";<br> return file_put_contents($filename, $encode);<br> }<br> return false;<br> }<br> public function index(){<br> $filename = '根目录下绝对路径.php';<br> $a=$this->encode_file_contents($filename);<br> if($a){<br> echo "OK,加密完成！";<br> }else{<br> echo "No,加密失败！";<br> } <br> }</p><br><br>
来源：https://www.cnblogs.com/xinyixuan/p/11527428.html
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