php常用自定义函数

根据请求url获取xml结果并转换成json对象

/**
* 根据请求url获取xml结果并转换成json对象
* @author ganyuanjiang  <3164145970@qq.com>
* @time 2017-07-26 13:25:56
* @param 
* @return json mixed
*/

if (!function_exists('xml_json')) {

    function xml_json($url)
    {
        $res = json_decode(json_encode(simplexml_load_string(file_get_contents($url))),true);
        return $res;
    }
}

根据请求url获取字符串数组结果并转换成json对象

/**
* 根据请求url获取字符串数组结果并转换成json对象
* @author ganyuanjiang  <3164145970@qq.com>
* @time 2017-07-26 13:29:12
* @param url 请求链接
* @return json mixed
*/

if (!function_exists('string_json')) {

    function string_json($url)
    {
        $arrContextOptions=array(
          "ssl"=>array(
              "verify_peer"=>false,
              "verify_peer_name"=>false,
          ),
        );  
        $res = json_decode(file_get_contents($url, false, stream_context_create($arrContextOptions)),true);
        return $res;
    }
}

将数组转换成xml

/**
* 将数组转换成xml
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-08-31 16:04:13
* @return xml
*/
if(!function_exists('arr_xml')){
   function arr_xml($arr)
  {
    if(!is_array($arr) || count($arr) <= 0)
    {
        return false;
    }
      
    $xml = "<xml>";
    foreach ($arr as $key=>$val)
    {
      if (is_numeric($val)){
        $xml.="<".$key.">".$val."</".$key.">";
      }else{
        $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
      }
    }
      $xml.="</xml>";
      return $xml; 
  }
}

将xml转为array

/**
* 将xml转为array
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-09-11 10:31:31
* @param string $xml
* @return array
*/
if(!function_exists('xml_arr')){
   function xml_arr($xml)
  {
    if(!$xml){
      return false;
    }
    //将XML转为array
    //禁止引用外部xml实体
    libxml_disable_entity_loader(true);
    $result = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);    
    return $result;
  }
}

ajax请求返回函数

/**ajax请求返回函数
 * @param int $code 错误代码
 * @param string $msg 错误或成功消息
 * @param array $arr json资源
 * @return array 数组，tp5自动转换json
 */function json_result($code,$msg="",$arr=array()){
    header("Content-type: text/html; charset=utf-8");
    header('Access-Control-Allow-Headers: Origin, Content-Type, X-Auth-Token');
    header("Access-Control-Allow-origin: *");
    header("Access-Control-Allow-Headers: X-Requested-With");
    header("Access-Control-Allow-Methods: POST,GET");
    $result=array();
    $result['error_code']=$code;
    $result['msg']=$msg;
    $result['res']=$arr;
    echo json_encode($result);
}

获取json数据

/**获取json数据
 * @param $uid 用户主键id
 * @param $salt 用户盐值
 * @return string token字符串
 */
function get_JsonData(){
    $json = file_get_contents('php://input');
    if ($json) {
        $json = str_replace("'", '', $json);
        $json = json_decode($json,true);
    }
    return $json;
}

校验日期格式是否正确

/**
 * 校验日期格式是否正确
 * @author gyj <375023402@qq.com>
 * @createtime 2018-08-27T15:06:51+0800
 * @param      string $date 日期
 * @param      string $formats 需要检验的格式数组
 * @return     boolean
 */
function checkDateIsValid($date, $formats = array("Y-m-d", "Y/m/d","Ymd")) {
    $unixTime = strtotime($date);
    if (!$unixTime) { //strtotime转换不对，日期格式显然不对。
        return false;
    }
    //校验日期的有效性，只要满足其中一个格式就OK
    foreach ($formats as $format) {
        if (date($format, $unixTime) == $date) {
            return true;
        }
    }

    return false;
}

记录自定义日志

/**
* 记录自定义日志
* @author gyj  <375023402@qq.com>
* @createtime 2018-08-24 14:12:01
* @param $msg 错误信息
* @param $type 写入类型 wechat aliyun
* @return [type] [description]
*/
if(!function_exists('log_result')){
  function log_result($msg='',$type='normal')
  {
    $dir = dirname(LOG_PATH)."/log/".$type."/";
    if(!is_dir($dir)){
        mkdir($dir,0777);
    }
    $dir .= date('Ym')."/";
    $file = $dir.date('d').".log";
    if(!is_dir($dir)){
        mkdir($dir,0777);
    }
    file_put_contents($file,date('Y-m-d H:i:s')."
".$msg."
---------------------------------------------------------------
", FILE_APPEND);
  }
  
}

删除文件目录

/**
* 删除文件目录
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-11-30 13:34:28
* @param $dir 文件目录
* @return 
*/
if(!function_exists('deldir')){
  function deldir($dir) {
      $dh = opendir($dir);
      while ($file = readdir($dh)) {
          if ($file != "." && $file != "..") {
              $fullpath = $dir . "/" . $file;
              if (!is_dir($fullpath)) {
                  unlink($fullpath);
              } else {
                  deldir($fullpath);
              }
          }
      }
  }
}

获取客户端ip

/**
* 获取客户端ip
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-12-16 09:59:54
* @param 
* @return string 客户端ip
*/
if(!function_exists('get_client_ip')){
  function get_client_ip(){
    $cip = "unknown";
    if($_SERVER['REMOTE_ADDR']){
        $cip = $_SERVER['REMOTE_ADDR'];
    }elseif (getenv('REMOTE_ADDR')) {
        $cip = $getenv['REMOTE_ADDR'];
    }

      return $cip;
  }
}

发送get请求

/**
 * 发送get请求
 * @author ganyuanjiang  <3164145970@qq.com>
 * @createtime 2017-08-05 14:28:21
 * @param string $url 请求地址
 * @return mixed
 */
if (!function_exists('https_get')) {
    
  function https_get($url){
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_TIMEOUT, 500);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($curl, CURLOPT_URL, $url);

    $res = curl_exec($curl);
    curl_close($curl);

    return $res;
  }
}

发送post请求

/**
 * 发送post请求
 * @author ganyuanjiang  <3164145970@qq.com>
 * @createtime 2017-07-26 14:06:04
 * @param string $url 请求地址
 * @param array $post_data post键值对数据
 * @return string
 */
if (!function_exists('https_request')) {
    
  function https_request($url,$data=null){
    header("Content-type: text/html; charset=utf-8");
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $tmpInfo = curl_exec($ch);
    if (curl_errno($ch)) {
      return curl_error($ch);
    }

    curl_close($ch);
    return $tmpInfo;

  }
}

将时分转换成秒数

/**
 * 将时分转换成秒数
 * @author gyj <375023402@qq.com>
 * @createtime 2018-08-29T10:15:58+0800
 * @param     
 * @return    秒数
 */
if (!function_exists('hour_time')) {

    function hour_time($unix){
        return strtotime(date('H:i',strtotime($unix)))-strtotime(date('Y-m-d',strtotime($unix)));
    }
}

获取毫秒级别的时间戳

/**
* 获取毫秒级别的时间戳
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-09-11 10:05:50
* @param 
* @return [type] [description]
*/
if(!function_exists('milli_time')){
  function milli_time()
  {
    //获取毫秒的时间戳
    $time = explode ( " ", microtime () );
    $time = $time[1] . ($time[0] * 1000);
    $time2 = explode( ".", $time );
    $time = $time2[0];
    return $time;
  }
  
}

获取一个时间在多少天、小时、分、秒前

if(!function_exists('time_ago')){
  function time_ago($time){
    $diff = time()-$time;
    if($diff<60){
      return $diff."秒前";
    }else if(60<=$diff && $diff<3600){
      return (int)($diff/60)."分钟前";
    }else if(3600<=$diff && $diff<3600*24){
      return (int)($diff/3600)."小时前";
    }else if((3600*24)<=$diff){
      return (int)($diff/3600/24)."天前";
    }else{
      return "未知";
    }
  }
}

encrypt加密解密函数

/**
* encrypt加密解密函数
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-07-29 13:54:01
* @param string string 加密/解密字符串
* @param operation string E表示加密，D表示解密
* @param key string 密钥 
* @return string 加密/解密后字符串
*/
if(!function_exists('encrypt')){

    function encrypt($string,$operation,$key=''){ 
        $key=md5($key); 
        $key_length=strlen($key); 
          $string=$operation=='D'?base64_decode($string):substr(md5($string.$key),0,8).$string; 
        $string_length=strlen($string); 
        $rndkey=$box=array(); 
        $result=''; 
        for($i=0;$i<=255;$i++){ 
               $rndkey[$i]=ord($key[$i%$key_length]); 
            $box[$i]=$i; 
        } 
        for($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($operation=='D'){ 
            if(substr($result,0,8)==substr(md5(substr($result,8).$key),0,8)){ 
                return substr($result,8); 
            }else{ 
                return''; 
            } 
        }else{ 
            return str_replace('=','',base64_encode($result)); 
        } 
    }
}

AES 加解密算法

/**
* AES ECB解密算法
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-09-22 18:01:40
* @param $data 参数 
* @param $key 密钥 
* @return 处理结果
*/

function aes_decode($sStr, $sKey) {
    $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, hextobin($sKey), base64_decode($sStr), MCRYPT_MODE_ECB);
    $dec_s = strlen($decrypted);
    $padding = ord($decrypted[$dec_s - 1]);
    $decrypted = substr($decrypted, 0, -$padding);
    return $decrypted;
}

function hextobin($hexstr) {
    $n = strlen($hexstr);
    $sbin = "";
    $i = 0;
    while ($i < $n) {
        $a = substr($hexstr, $i, 2);
        $c = pack("H*", $a);
        if ($i == 0) {
            $sbin = $c;
        } else {
            $sbin.=$c;
        }
        $i+=2;
    }
    return $sbin;
}

 数组排序 根据某个字段排序 

/**
* 数组排序 根据某个字段排序 
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-07-30 09:31:48
* @param $arr  array() 要排序的数组
* @param $sort  string 排序类型 asc顺序 desc逆序
* @param $field string 要排序的字段 
* @return array() 排序过的数组
*/
if(!function_exists('arr_sort')){
    function arr_sort($arr,$sort,$field){
       $arr_sort = $sort=='asc'?SORT_ASC:SORT_DESC;
       foreach ($arr as $value) {
           $flag[] = $value[$field];
       }
       array_multisort($flag, $arr_sort, $arr); 
       return $arr;
    }
}

将对象数组转换成json数组

/**
* 将对象数组转换成json数组
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-08-11 14:12:57
* @param $arr  object 要转换的对象数组
* @return json array() 转换成json数组
*/
if(!function_exists('obj_arr')){
    function obj_arr($obj){
       return json_decode(json_encode($obj),true);
    }
}

将json_encode一维数组字符串转换成带分割符的字符串

/**
* 将json_encode一维数组字符串转换成带分割符的字符串
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-08-31 16:04:13
* @param $str  string json_encode字符串
* @param $delimiter  string 分隔符,默认为","
* @return str string 带分割符的字符串
*/
if(!function_exists('encode_str')){
    function encode_str($str,$delimiter=","){
       $arr =  json_decode($str,true);
       $new_str = "";
       foreach ($arr as $value) {
           if(!empty($new_str)){
                $new_str.=",";
           }
           $new_str.=$value;
       }
       return $new_str;
    }
}

随机字符串

/**
* 随机字符串
* @author ganyuanjiang  <3164145970@qq.com>
* @createtime 2017-08-05 14:22:15
* @param length int 随机字符串长度
* @return str string 随机字符串
*/
if(!function_exists('nonce_str')){
  function nonce_str($length = 16) {
    $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    $str = "";
    for ($i = 0; $i < $length; $i++) {
      $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
    }
    return $str;
  }
}