php自备函数

 /**
 
 
 
  
判断是否SSL协议
 
  
@return boolean
 */
 function is_ssl() {
 if(isset($_SERVER['HTTPS']) && ('1' == $_SERVER['HTTPS'] || 'on' == strtolower($_SERVER['HTTPS']))){
 return true;
 }elseif(isset($_SERVER['SERVER_PORT']) && ('443' == $_SERVER['SERVER_PORT'] )) {
 return true;
 }
 return false;
 //真为https假为http
 }
 

 //http请求
 function https_request($url, $data = null)
 {
 $curl = curl_init();
 curl_setopt($curl, CURLOPT_URL, $url);
 curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
 curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
 if (!empty($data)){
 curl_setopt($curl, CURLOPT_POST, 1);
 curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
 }
 curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
 $output = curl_exec($curl);
 curl_close($curl);
 return $output;
 }
 

 //计算时间多少秒之前
 function format_date($time){
 $time = strtotime($time);
 $t=time()-$time;
 $f=array(
 '31536000'=>'年',
 '2592000'=>'个月',
 '604800'=>'星期',
 '86400'=>'天',
 '3600'=>'小时',
 '60'=>'分钟',
 '1'=>'秒'
 );
 foreach ($f as $k=>$v) {
 if (0 !=$c=floor($t/(int)$k)) {
 return $c.$v.'前';
 }
 }
 }
 

 /**
 
 
 
  
计算距离多少km
 
  
@param [float] $s [距离 :128.9]
 
  
@return [string] [200m 100km >30km]
 */
 function convertMeter($s){
 if($s /1000 <1){
 return sprintf("%.0f",$s).'m';
 }elseif($s /1000 >=1 && ($s /1000 < 30)){
 return sprintf("%.2f", ($s /1000))."km";
 }elseif($s /1000 > 30){
 return ">30km";
 }
 }
 

 /**
 *求两个已知经纬度之间的距离,单位为米
 *@param lng1,lng2 经度
 *@param lat1,lat2 纬度
 *@return float 距离，单位米
 *@author www.Alixixi.com
 **/
 //function getdistance($lng1,$lat1,$lng2,$lat2){
 function getdistance($in_location,$coordination){
 $in_location = explode(',',$in_location);
 list($lng1, $lat1) = $in_location;
 $coordination = explode(',',$coordination);
 list($lng2, $lat2) = $coordination;
 
 
//将角度转为狐度
$radLat1=deg2rad($lat1);//deg2rad()函数将角度转换为弧度
$radLat2=deg2rad($lat2);
$radLng1=deg2rad($lng1);
$radLng2=deg2rad($lng2);
$a=$radLat1-$radLat2;
$b=$radLng1-$radLng2;
$s=2*asin(sqrt(pow(sin($a/2),2)+cos($radLat1)*cos($radLat2)*pow(sin($b/2),2)))*6378.137*1000;
//$s = convertMeter($s);
return $s;
 
 
}
 
 

 /**
 *获取html文本里的img
 
 
 
  
@param string $content
 
  
@return array
 */
 function sp_getcontent_imgs($content){
 import("phpQuery");
 \phpQuery::newDocumentHTML($content);
 $pq=pq();
 $imgs=$pq->find("img");
 $imgs_data=array();
 if($imgs->length()){
 foreach ($imgs as $img){
 $img=pq($img);
 $im['src']=$img->attr("src");
 $im['title']=$img->attr("title");
 $im['alt']=$img->attr("alt");
 $imgs_data[]=$im;
 }
 }
 \phpQuery::$documents=null;
 return $imgs_data;
 }
 

 /**
 
 
 
  
保存数组变量到php文件
 /
 function sp_save_var($path,$value){
 $ret = file_put_contents($path, "");
 return $ret;
 }
 

 /* 
  
随机字符串生成
 
  
@param int $len 生成的字符串长度
 
  
@return string
 */
 function sp_random_string($len = 6,$type=1) {
 if($type){
 $chars = array(
 "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k",
 "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v",
 "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G",
 "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
 "S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2",
 "3", "4", "5", "6", "7", "8", "9"
 );
 $charsLen = count($chars) - 1;
 shuffle($chars); // 将数组打乱
 $output = "";
 for ($i = 0; $i < $len; $i++) {
 $output .= $chars[mt_rand(0, $charsLen)];
 }
 }else{
 return mt_rand(1000, 9999);
 }
 return $output;
 }
 

 /**
 
 
 
  
递归检测一个值是否存在
 
  
@param [string] $value [要查找的字符串]
 
  
@param [array] $array [检查所在的数组]
 
  
 
@return [bool] [true/false]
 */
 function deep_in_array($value, $array) {
 foreach($array as $item) {
 if(!is_array($item)) {//如果不是数组
 if ($item == $value) {
 return true;
 } else {
 continue;
 }
 }
 
 if(in_array($value, $item)) {  //如果是数组
     return true;      
 } else if(deep_in_array($value, $item)) {  //递归调用
     return true;      
 }  
 
}
 return false;
 }
 

 /**
 
 
 
  
获取团队人数
 
  
@param [string] $name 介绍人姓名
 
  
@param [int] $rank 获取下级几级
 
  
@param [bool] $activation 是否获取激活的会员
 
  
 
@return [type] [description]
 */
 function getTeam($name,$rank=26,$activation=false,$lev=0){
 global $num ;
 $num++;
 if(!$name) return false;
 if($activation){//获取激活的下级会员
 $userList = M('member')->field('id,account,active')->where(array('references'=>$name,'active'=>1))->select();
 }else{
 $userList = M('member')->field('id,account,active')->where(array('references'=>$name))->select();
 }
 if($userList && $num<=$rank){
 foreach ($userList as $key => $value) {
 $userList[$key]['lev'] = $num;
 $userList['list'] = getTeam($value['account'],$rank,$activation);
 $arr[] = $userList;
 }
 }
 return $arr;
 }
 

 function arr_to_xml($arr, $dom = 0, $item = 0) {
 if (! $dom) {
 $dom = new DOMDocument ("1.0","UTF-8");
 }
 
if (! $item) {
 $ccc = array_keys ( $arr );
 if ($ccc [0] == 'envelope') {
 $str_head = 'request';
 } else {
 $str_head = 'envelope';
 }
 $item = $dom->createElement ( $str_head );
 $dom->appendChild ( $item );
 }
 foreach ( $arr as $key => $val ) {
 $itemx = $dom->createElement ( is_string ( $key ) ? $key : "record" );
 $item->appendChild ( $itemx );
 if (! is_array ( $val )) {
 $text = $dom->createTextNode ( $val );
 $itemx->appendChild ( $text );
 } else {
 arr_to_xml ( $val, $dom, $itemx );
 }
 }
 
return $dom->saveXML ();
 }
  
  
 
function xml_to_array($xml) {
 $reg = "/<(\w+)[^>]?>([\x00-\xFF]?)<\/\1>/";
 if (preg_match_all ( $reg, $xml, $matches )) {
 $count = count ( $matches [0] );
 $arr = array ();
 for($i = 0; $i < $count; $i ++) {
 
 
        $key = $matches [1] [$i];   
        
        $val = xml_to_array ( $matches [2] [$i] ); // 递归
        if (array_key_exists ( $key, $arr )) {
            if (is_array ( $arr [$key] )) {
                if (! array_key_exists ( 0, $arr [$key] )) {
                    $arr [$key] = array (
                            $arr [$key] 
                    );
                }
            } else {
                
                $arr [$key] = array (
                        $arr [$key] 
                );
            }
            $arr [$key] [] = $val;
        } else {
            
            $arr [$key] = $val;
        }
    }
    return $arr;
} else {
    return $xml;
}
 
 
}