php,url地址加密.url地址解密,url地址生成key

<?php
header("Content-Type:text/html; charset=utf-8");
 
 
 
 
/*
* URL地址加密
*/
function url_jiami($string, $key='abcdefghijklmnopqrstuvwxyz', $rand=true) {
    $encrypt_key = md5($key[rand(0, (strlen($key) -1))]);
    $ctr = 0;
    $tmp = '';
    for($i = 0; $i < strlen($string); $i++)
    {
        $ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;
        $tmp .= $rand ? $encrypt_key[$ctr] . ($string[$i] ^ $encrypt_key[$ctr++]) : $string[$i];
    }
    //采用base64_encode加密再将字符串放入函数中再次进行处理
    return str_replace('\', ';fxx;', str_replace('+', ';jia;', str_replace('/', ';xx;', base64_encode(url_jm_key($tmp,$key)))));
}
 
/*
* URL地址解密（将已加密的地址解密）
*/
function url_jiemi($string, $key='abcdefghijklmnopqrstuvwxyz', $rand=true) {
    //使用base64_encode解密再将字符串进行处理
    $string = url_jm_key(base64_decode(str_replace(';fxx;', '\', str_replace(';jia;', '+', str_replace(';xx;', '/', $string)))), $key);
    //直接将字符串进行处理
    $tmp = '';
    for($i = 0;$i < strlen($string); $i++)
    {
        $md5 = $string[$i];
        $tmp .= $rand ? $string[++$i] ^ $md5 : $md5;
    }
    return $tmp;
}
 
/*
* 生成URL加密解密的KEY
*/
function url_jm_key($string, $encrypt_key) {
    $encrypt_key = md5($encrypt_key);
    $ctr = 0;
    $tmp = '';
    for($i = 0; $i < strlen($string); $i++)
    {
        $ctr = $ctr == strlen($encrypt_key) ? 0 : $ctr;
        $tmp .= $string[$i] ^ $encrypt_key[$ctr++];
    }
    return $tmp;
}
 
 
/**
* 访问网址并取得其内容
* @param $url String 网址
* @param $postFields Array 将该数组中的内容用POST方式传递给网址中
* @param $cookie_file string cookie文件
* @param $r_or_w string 写cookie还是读cookie或是两都都有，r读，w写，a两者，null没有cookie
* @return String 返回网址内容
*/
function curl_content($url, $postFields = null, $cookie_file = null, $r_or_w = null)
{
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); // 模拟用户使用的浏览器  
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); // 使用自动跳转   
    curl_setopt($ch, CURLOPT_AUTOREFERER, 1); // 自动设置Referer
    if ($cookie_file && ($r_or_w == 'a' || $r_or_w == 'w')) {
        curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie_file); // 存放Cookie信息的文件名称
    }
    if ($cookie_file && ($r_or_w == 'a' || $r_or_w == 'r')) {
        curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie_file); // 读取上面所储存的Cookie信息
    }
    curl_setopt($ch, CURLOPT_TIMEOUT, 30); // 设置超时限制防止死循环
    curl_setopt($ch, CURLOPT_HEADER, 0); // 显示返回的Header区域内容
    curl_setopt($ch, CURLOPT_FAILONERROR, false);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
 
    if (is_array($postFields) && 0 < count($postFields))
    {
        $postBodyString = "";
        foreach ($postFields as $k => $v)
        {
            $postBodyString .= "$k=" . urlencode($v) . "&";
        }
        unset($k, $v);
        curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0);
        curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, substr($postBodyString,0,-1));
    }
 
    $reponse = curl_exec($ch);
    if (curl_errno($ch)){
        throw new Exception(curl_error($ch),0);
    }
    else{
        $httpStatusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        /*if (200 !== $httpStatusCode){
            throw new Exception($reponse,$httpStatusCode);
            //print_r($reponse);exit;
        }*/
    }
    curl_close($ch);
    return $reponse;
}
 
 

/**
 * 抓取的url链接内容
 * @param string $url    要抓取的url链接,可以是http,https链接
 * @param int $second    设置cURL允许执行的最长秒数
 * @return mixed    
 */
function get_curl_contents($url, $second = 30)
{
    $ch = curl_init();
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_HEADER,0);
    curl_setopt($ch,CURLOPT_TIMEOUT,$second);//设置cURL允许执行的最长秒数
    curl_setopt($ch,CURLOPT_RETURNTRANSFER, true);//当此项为true时,curl_exec($ch)返回的是内容;为false时,curl_exec($ch)返回的是true/false
    
    //以下两项设置为FALSE时,$url可以为"https://login.yahoo.com"协议
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,  FALSE);

    $content = curl_exec($ch);
    curl_close($ch);
    return $content;
}












 
$jjjj = urlencode("http://mmsns.qpic.cn/mmsns/ffCxLc24SWrf7uO7cA4Xrhm7ClK7sIpxvRuYszMPiaibFI8xVJfJJPibg/0");