本页文章导读:

    ▪php上传文件的增强函数       表单中file对象，比如说$_FILES['doc']，$path为保存的路径，$type为限制上传的类型（他是一个数组，比如说限制上传doc和docx和格式，那这个参数可以填array(“doc”,”.docx”)，而且扩展名前有无.........

    ▪php 模拟POST|GET操作实现代码       最近开发social game，发现使用这个东西还是比较平凡，这里做个总结，一来为自己留点记忆，另外希望对大家有帮助. 首先来看看需求，如果我们开发facebook上social game,需要调用它的接口来获.........

    ▪UCenter中的一个可逆加密函数authcode函数代码       代码如下: function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) { $ckey_length = 4; // 随机密钥长度 取值 0-32; // 加入随机密钥，可以令密文无任何规律，即便是原文和密钥完全相同，加密结.........

代码如下:

<?php
function upload($file,$path,$type){
$state = array();
$state['error'] = "true";
$alltype = ""; // 所有可以上传的类型，用"/"连接起来
$path = trim($path);
//为$path末尾加上"/"
if(strlen(strrchr($path,‘/‘)) <= 1){
$path .= "/";
}
//为类型加上开头“.”
//将所有类型合成字符串，用"/"连接起来<span id="more-78"></span>
foreach($type as $key=>$typeone){
$type[$key] = $typeone = trim($typeone);
if(strlen(strchr($typeone,".")) != strlen($typeone)){
$type[$key] = ".".$typeone;}
$alltype .= $typeone.‘/‘;
}
$alltype = substr($alltype,0,strlen($alltype)-1); //去掉最后的“/”
if(empty($file['name'])){
$state['error'] = "没有上传{$alltype}类型文件！";
$state['errorid'] = 8;
return $state;
} else {
if (!$file['error']) {
$state['name'] = $file['name'];
$state['type'] = strrchr($state['name'],‘.‘);
if(in_array($state['type'],$type)){
$time = date("U");
$state['upname'] = $time.rand(1000,9999).$state['type']; //文件命名
if(copy($file['tmp_name'],$path.$state['upname'])){
$state['time'] = date("U"); //上传的时间
$state['error'] = false;
return $state;
} else {
switch($file(‘error‘)){
case 1: $state['error'] = $state['name']."上传失败，文件大小超出了服务器的空间大小！";$state['errorid'] = 1;return $state;
case 2: $state['error'] = $state['name']."上传失败，要上传的文件大小超出浏览器限制！";$state['errorid'] = 2;return $state;
case 3: $state['error'] = $state['name']."上传失败，文件仅部分被上传！";$state['errorid'] = 3;return $state;
case 4: $state['error'] = $state['name']."上传失败，没有找到要上传的文件！";$state['errorid'] = 4;return $state;
case 5: $state['error'] = $state['name']."上传失败，服务器临时文件夹丢失！";$state['errorid'] = 5;return $state;
case 6: $state['error'] = $state['name']."上传失败，文件写入到临时文件夹出错！";$state['errorid'] = 6;return $state;
default: $state['error'] = $state['name']."上传失败，位置错误！";$state['errorid'] = 10;return $state;
}
}
} else {
$state['error'] = $state['name']."上传失败！不符合所要上传的文件类型！({$alltype})";
$state['errorid'] = 10;
return $state;
}
}
}
?>

代码如下:

$url_with_get= "http://api.facebook.com/restserver.php?method=facebook.friends.get&session_key=&api_key=1232121311&v=1.0";
$post = array('sig'=>12312123234353);

代码如下:

if(function_exists('curl_init'))
{
　　$ch = curl_init();
　　curl_setopt($ch, CURLOPT_URL, $url_with_get);
　　curl_setopt($ch, CURLOPT_POST, 1);
　　curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
　　curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
　　$result = curl_exec($ch);
　　curl_close($ch);
}
else
{
　　$content = http_build_query($post)
　　$content_length = strlen($content);
　　$context =
　　array('http' =>
array('method' => 'POST',
'user_agent' => $user_agent,
'header' => 'Content-Type: ' . $content_type . "\r\n" .
'Content-Length: ' . $content_length,
'content' => $content));
$context_id = stream_context_create($context);
$sock = fopen($url_with_get, 'r', false, $context_id);
$result = '';
if ($sock)
　　{
　　　　while (!feof($sock))
　　$result .= fgets($sock, 4096);
　　fclose($sock);
}
return $result;
}
}

代码如下:

function authcode($string, $operation = 'DECODE', $key = '', $expiry = 0) {

$ckey_length = 4; // 随机密钥长度 取值 0-32;
// 加入随机密钥，可以令密文无任何规律，即便是原文和密钥完全相同，加密结果也会每次不同，增大破解难度。
// 取值越大，密文变动规律越大，密文变化 = 16 的 $ckey_length 次方
// 当此值为 0 时，则不产生随机密钥

$key = md5($key ? $key : UC_KEY);
$keya = md5(substr($key, 0, 16));
$keyb = md5(substr($key, 16, 16));
$keyc = $ckey_length ? ($operation == 'DECODE' ? substr($string, 0, $ckey_length): substr(md5(microtime()), -$ckey_length)) : '';

$cryptkey = $keya.md5($keya.$keyc);
$key_length = strlen($cryptkey);

$string = $operation == 'DECODE' ? base64_decode(substr($string, $ckey_length)) : sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$keyb), 0, 16).$string;
$string_length = strlen($string);

$result = '';
$box = range(0, 255);

$rndkey = array();
for($i = 0; $i <= 255; $i++) {
$rndkey[$i] = ord($cryptkey[$i % $key_length]);
}

for($j = $i = 0; $i < 256; $i++) {
$j = ($j + $box[$i] + $rndkey[$i]) % 256;
$tmp = $box[$i];
$box[$i] = $box[$j];
$box[$j] = $tmp;
}

for($a = $j = $i = 0; $i < $string_length; $i++) {
$a = ($a + 1) % 256;
$j = ($j + $box[$a]) % 256;
$tmp = $box[$a];
$box[$a] = $box[$j];
$box[$j] = $tmp;
$result .= chr(ord($string[$i]) ^ ($box[($box[$a] + $box[$j]) % 256]));
}

if($operation == 'DECODE') {
if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$keyb), 0, 16)) {
return substr($result, 26);
} else {
return '';
}
} else {
return $keyc.str_replace('=', '', base64_encode($result));
}
}
/***************************************************************************/
$string = authcode("Hello","ENCODE","HTML_TCCJ_AUTH");
echo $string,'<br/>';
echo authcode($string,"DECODE","HTML_TCCJ_AUTH"),'<br/>';