php 手工函数收集，小函数收集　不断更新中。。。。

/**-------------* 获取客户端IP*-------------*/ function get_ip() { if (isset($_SERVER)) { if (isset($_SERVER[HTTP_X_FORWARDED_FOR])) { $realip = $_SERVER[HTTP_X_FORWARDED_FOR]; } elseif (isset($_SERVER[HTTP_CLIENT_IP])) { $realip = $_SERVER[HTTP_CLIENT_IP]; } else { $realip = $_SERVER[REMOTE_ADDR]; } } else { if (getenv("HTTP_X_FORWARDED_FOR")) { $realip = getenv( "HTTP_X_FORWARDED_FOR"); } elseif (getenv("HTTP_CLIENT_IP")) { $realip = getenv("HTTP_CLIENT_IP"); } else { $realip = getenv("REMOTE_ADDR"); } } return $realip; }

/* * ---------------- *  操作完成的提示页面 Alan * ---------------- */   function get_show($url,$cont){   header("Location:../msage.php?url=$url&cont=$cont");   return;   }

   function get_selected($type){    if($type==1){     $alan='selected';    }    return $alan;   }   /** * 自动保存远程图片，到指定的$filename,如果$filename为空，则自动以时间为格式保存。 * @param $url      图片的完版url * @param $filename  保存到文件名 */function GrabImage($url,$filename="") {   if($url==""):return false;endif;   if($filename=="") {   $ext=strrchr($url,".");   if($ext!=".gif" && $ext!=".jpg"):return false;endif;   $filename=date("dMYHis").$ext;   }   ob_start();   readfile($url);   $img = ob_get_contents();   ob_end_clean();   $size = strlen($img);   $fp2=@fopen($filename, "a");   fwrite($fp2,$img);   fclose($fp2);   return $filename; }

/** * 自动获得远程网页内容 * @param unknown_type $url  远程url地址 */function get_url_content($url) {  for($changshinum=0;$changshinum<5;$changeshinum++){   try{    if (extension_loaded('curl')) {     if(strpos($url,':')){            $ch = curl_init($url);            curl_setopt($ch, CURLOPT_HEADER, 0);            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);            $content = curl_exec($ch);            curl_close($ch);     }else{      $content = file_get_contents($url);     }       } else {           $content = file_get_contents($url);       }       if(!$content){         die("获取地址：$url 内容出错.");        sleep(2);        continue;       }    break;   }catch(Exception $e)   {    sleep(2);    continue;   }  }    return $content;}

/** * 写入文件 * @param unknown_type $path  保存文件路径 * @param unknown_type $content 文件内容 * @param unknown_type $openType 文件方式 包括a,w,r,x  默认w */function fileWrite($path,$content,$openType='w'){  try {   $fp = fopen($path,  $openType);   fwrite($fp, $content);   fclose($fp);  } catch (Exception $e) {   die("写文件出错！".$path.$e);  }}

#随机生成字符串function randStr($length=8) { $hash = ''; $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz'; $max = strlen($chars) - 1; mt_srand((double)microtime() * 1000000); for($i = 0; $i < $length; $i++) {   $hash .= $chars[mt_rand(0, $max)]; } return $hash;}