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Code examples for commonly used functions in php

黄舟
黄舟Original
2017-08-13 09:17:46973browse

Go directly to the code, I believe it will be used in the future

<?php

/**
 * @param $arr
 * @param $key_name
 * @return array
 * 将数据库中查出的列表以指定的 id 作为数组的键名 
 */
function convert_arr_key($arr, $key_name)
{
    $arr2 = array();
    foreach($arr as $key => $val){
        $arr2[$val[$key_name]] = $val;        
    }
    return $arr2;
}

function encrypt($str){
    return md5(C("AUTH_CODE").$str);
}
            
/**
 * 获取数组中的某一列
 * @param type $arr 数组
 * @param type $key_name  列名
 * @return type  返回那一列的数组
 */
function get_arr_column($arr, $key_name)
{
    $arr2 = array();
    foreach($arr as $key => $val){
        $arr2[] = $val[$key_name];        
    }
    return $arr2;
}


/**
 * 获取url 中的各个参数  类似于 pay_code=alipay&bank_code=ICBC-DEBIT
 * @param type $str
 * @return type
 */
function parse_url_param($str){
    $data = array();
    $parameter = explode(&#39;&&#39;,end(explode(&#39;?&#39;,$str)));
    foreach($parameter as $val){
        $tmp = explode(&#39;=&#39;,$val);
        $data[$tmp[0]] = $tmp[1];
    }
    return $data;
}


/**
 * 二维数组排序
 * @param $arr
 * @param $keys
 * @param string $type
 * @return array
 */
function array_sort($arr, $keys, $type = &#39;desc&#39;)
{
    $key_value = $new_array = array();
    foreach ($arr as $k => $v) {
        $key_value[$k] = $v[$keys];
    }
    if ($type == &#39;asc&#39;) {
        asort($key_value);
    } else {
        arsort($key_value);
    }
    reset($key_value);
    foreach ($key_value as $k => $v) {
        $new_array[$k] = $arr[$k];
    }
    return $new_array;
}


/**
 * 多维数组转化为一维数组
 * @param 多维数组
 * @return array 一维数组
 */
function array_multi2single($array)
{
    static $result_array = array();
    foreach ($array as $value) {
        if (is_array($value)) {
            array_multi2single($value);
        } else
            $result_array [] = $value;
    }
    return $result_array;
}

/**
 * 友好时间显示
 * @param $time
 * @return bool|string
 */
function friend_date($time)
{
    if (!$time)
        return false;
    $fdate = &#39;&#39;;
    $d = time() - intval($time);
    $ld = $time - mktime(0, 0, 0, 0, 0, date(&#39;Y&#39;)); //得出年
    $md = $time - mktime(0, 0, 0, date(&#39;m&#39;), 0, date(&#39;Y&#39;)); //得出月
    $byd = $time - mktime(0, 0, 0, date(&#39;m&#39;), date(&#39;d&#39;) - 2, date(&#39;Y&#39;)); //前天
    $yd = $time - mktime(0, 0, 0, date(&#39;m&#39;), date(&#39;d&#39;) - 1, date(&#39;Y&#39;)); //昨天
    $dd = $time - mktime(0, 0, 0, date(&#39;m&#39;), date(&#39;d&#39;), date(&#39;Y&#39;)); //今天
    $td = $time - mktime(0, 0, 0, date(&#39;m&#39;), date(&#39;d&#39;) + 1, date(&#39;Y&#39;)); //明天
    $atd = $time - mktime(0, 0, 0, date(&#39;m&#39;), date(&#39;d&#39;) + 2, date(&#39;Y&#39;)); //后天
    if ($d == 0) {
        $fdate = &#39;刚刚&#39;;
    } else {
        switch ($d) {
            case $d < $atd:
                $fdate = date(&#39;Y年m月d日&#39;, $time);
                break;
            case $d < $td:
                $fdate = &#39;后天&#39; . date(&#39;H:i&#39;, $time);
                break;
            case $d < 0:
                $fdate = &#39;明天&#39; . date(&#39;H:i&#39;, $time);
                break;
            case $d < 60:
                $fdate = $d . &#39;秒前&#39;;
                break;
            case $d < 3600:
                $fdate = floor($d / 60) . &#39;分钟前&#39;;
                break;
            case $d < $dd:
                $fdate = floor($d / 3600) . &#39;小时前&#39;;
                break;
            case $d < $yd:
                $fdate = &#39;昨天&#39; . date(&#39;H:i&#39;, $time);
                break;
            case $d < $byd:
                $fdate = &#39;前天&#39; . date(&#39;H:i&#39;, $time);
                break;
            case $d < $md:
                $fdate = date(&#39;m月d日 H:i&#39;, $time);
                break;
            case $d < $ld:
                $fdate = date(&#39;m月d日&#39;, $time);
                break;
            default:
                $fdate = date(&#39;Y年m月d日&#39;, $time);
                break;
        }
    }
    return $fdate;
}


/**
 * 返回状态和信息
 * @param $status
 * @param $info
 * @return array
 */
function arrayRes($status, $info, $url = "")
{
    return array("status" => $status, "info" => $info, "url" => $url);
}
       
/**
 * @param $arr
 * @param $key_name
  * @param $key_name2
 * @return array
 * 将数据库中查出的列表以指定的 id 作为数组的键名 数组指定列为元素 的一个数组
 */
function get_id_val($arr, $key_name,$key_name2)
{
    $arr2 = array();
    foreach($arr as $key => $val){
        $arr2[$val[$key_name]] = $val[$key_name2];
    }
    return $arr2;
}

/**
 *  自定义函数 判断 用户选择 从下面的列表中选择 可选值列表:不能为空
 * @param type $attr_values
 * @return boolean
 */
function checkAttrValues($attr_values)
{        
    if((trim($attr_values) == &#39;&#39;) && ($_POST[&#39;attr_input_type&#39;] == &#39;1&#39;))        
        return false;
    else
        return true;
 }
 
 // 定义一个函数getIP() 客户端IP,
function getIP(){            
    if (getenv("HTTP_CLIENT_IP"))
         $ip = getenv("HTTP_CLIENT_IP");
    else if(getenv("HTTP_X_FORWARDED_FOR"))
            $ip = getenv("HTTP_X_FORWARDED_FOR");
    else if(getenv("REMOTE_ADDR"))
         $ip = getenv("REMOTE_ADDR");
    else $ip = "Unknow";
    return $ip;
}
// 服务器端IP
 function serverIP(){   
  return gethostbyname($_SERVER["SERVER_NAME"]);   
 }  
 
 
 /**
  * 自定义函数递归的复制带有多级子目录的目录
  * 递归复制文件夹
  * @param type $src 原目录
  * @param type $dst 复制到的目录
  */                        
//参数说明:            
//自定义函数递归的复制带有多级子目录的目录
function recurse_copy($src, $dst)
{
    $now = time();
    $dir = opendir($src);
    @mkdir($dst);
    while (false !== $file = readdir($dir)) {
        if (($file != &#39;.&#39;) && ($file != &#39;..&#39;)) {
            if (is_dir($src . &#39;/&#39; . $file)) {
                recurse_copy($src . &#39;/&#39; . $file, $dst . &#39;/&#39; . $file);
            }
            else {
                if (file_exists($dst . DIRECTORY_SEPARATOR . $file)) {
                    if (!is_writeable($dst . DIRECTORY_SEPARATOR . $file)) {
                        exit($dst . DIRECTORY_SEPARATOR . $file . &#39;不可写&#39;);
                    }
                    @unlink($dst . DIRECTORY_SEPARATOR . $file);
                }
                if (file_exists($dst . DIRECTORY_SEPARATOR . $file)) {
                    @unlink($dst . DIRECTORY_SEPARATOR . $file);
                }
                $copyrt = copy($src . DIRECTORY_SEPARATOR . $file, $dst . DIRECTORY_SEPARATOR . $file);
                if (!$copyrt) {
                    echo &#39;copy &#39; . $dst . DIRECTORY_SEPARATOR . $file . &#39; failed<br>&#39;;
                }
            }
        }
    }
    closedir($dir);
}

// 递归删除文件夹
function delFile($dir,$file_type=&#39;&#39;) {
    if(is_dir($dir)){
        $files = scandir($dir);
        //打开目录 //列出目录中的所有文件并去掉 . 和 ..
        foreach($files as $filename){
            if($filename!=&#39;.&#39; && $filename!=&#39;..&#39;){
                if(!is_dir($dir.&#39;/&#39;.$filename)){
                    if(empty($file_type)){
                        unlink($dir.&#39;/&#39;.$filename);
                    }else{
                        if(is_array($file_type)){
                            //正则匹配指定文件
                            if(preg_match($file_type[0],$filename)){
                                unlink($dir.&#39;/&#39;.$filename);
                            }
                        }else{
                            //指定包含某些字符串的文件
                            if(false!=stristr($filename,$file_type)){
                                unlink($dir.&#39;/&#39;.$filename);
                            }
                        }
                    }
                }else{
                    delFile($dir.&#39;/&#39;.$filename);
                    rmdir($dir.&#39;/&#39;.$filename);
                }
            }
        }
    }else{
        if(file_exists($dir)) unlink($dir);
    }
}

 
/**
 * 多个数组的笛卡尔积
*
* @param unknown_type $data
*/
function combineDika() {
    $data = func_get_args();
    $data = current($data);
    $cnt = count($data);
    $result = array();
    $arr1 = array_shift($data);
    foreach($arr1 as $key=>$item) 
    {
        $result[] = array($item);
    }        

    foreach($data as $key=>$item) 
    {                                
        $result = combineArray($result,$item);
    }
    return $result;
}


/**
 * 两个数组的笛卡尔积
 * @param unknown_type $arr1
 * @param unknown_type $arr2
*/
function combineArray($arr1,$arr2) {         
    $result = array();
    foreach ($arr1 as $item1) 
    {
        foreach ($arr2 as $item2) 
        {
            $temp = $item1;
            $temp[] = $item2;
            $result[] = $temp;
        }
    }
    return $result;
}
/**
 * 将二维数组以元素的某个值作为键 并归类数组
 * array( array(&#39;name&#39;=>&#39;aa&#39;,&#39;type&#39;=>&#39;pay&#39;), array(&#39;name&#39;=>&#39;cc&#39;,&#39;type&#39;=>&#39;pay&#39;) )
 * array(&#39;pay&#39;=>array( array(&#39;name&#39;=>&#39;aa&#39;,&#39;type&#39;=>&#39;pay&#39;) , array(&#39;name&#39;=>&#39;cc&#39;,&#39;type&#39;=>&#39;pay&#39;) ))
 * @param $arr 数组
 * @param $key 分组值的key
 * @return array
 */
function group_same_key($arr,$key){
    $new_arr = array();
    foreach($arr as $k=>$v ){
        $new_arr[$v[$key]][] = $v;
    }
    return $new_arr;
}

/**
 * 获取随机字符串
 * @param int $randLength  长度
 * @param int $addtime  是否加入当前时间戳
 * @param int $includenumber   是否包含数字
 * @return string
 */
function get_rand_str($randLength=6,$addtime=1,$includenumber=0){
    if ($includenumber){
        $chars=&#39;abcdefghijklmnopqrstuvwxyzABCDEFGHJKLMNPQEST123456789&#39;;
    }else {
        $chars=&#39;abcdefghijklmnopqrstuvwxyz&#39;;
    }
    $len=strlen($chars);
    $randStr=&#39;&#39;;
    for ($i=0;$i<$randLength;$i++){
        $randStr.=$chars[rand(0,$len-1)];
    }
    $tokenvalue=$randStr;
    if ($addtime){
        $tokenvalue=$randStr.time();
    }
    return $tokenvalue;
}

/**
 * CURL请求
 * @param $url 请求url地址
 * @param $method 请求方法 get post
 * @param null $postfields post数据数组
 * @param array $headers 请求header信息
 * @param bool|false $debug  调试开启 默认false
 * @return mixed
 */
function httpRequest($url, $method, $postfields = null, $headers = array(), $debug = false) {
    $method = strtoupper($method);
    $ci = curl_init();
    /* Curl settings */
    curl_setopt($ci, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
    curl_setopt($ci, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.2; WOW64; rv:34.0) Gecko/20100101 Firefox/34.0");
    curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, 60); /* 在发起连接前等待的时间,如果设置为0,则无限等待 */
    curl_setopt($ci, CURLOPT_TIMEOUT, 7); /* 设置cURL允许执行的最长秒数 */
    curl_setopt($ci, CURLOPT_RETURNTRANSFER, true);
    switch ($method) {
        case "POST":
            curl_setopt($ci, CURLOPT_POST, true);
            if (!empty($postfields)) {
                $tmpdatastr = is_array($postfields) ? http_build_query($postfields) : $postfields;
                curl_setopt($ci, CURLOPT_POSTFIELDS, $tmpdatastr);
            }
            break;
        default:
            curl_setopt($ci, CURLOPT_CUSTOMREQUEST, $method); /* //设置请求方式 */
            break;
    }
    $ssl = preg_match(&#39;/^https:\/\//i&#39;,$url) ? TRUE : FALSE;
    curl_setopt($ci, CURLOPT_URL, $url);
    if($ssl){
        curl_setopt($ci, CURLOPT_SSL_VERIFYPEER, FALSE); // https请求 不验证证书和hosts
        curl_setopt($ci, CURLOPT_SSL_VERIFYHOST, FALSE); // 不从证书中检查SSL加密算法是否存在
    }
    //curl_setopt($ci, CURLOPT_HEADER, true); /*启用时会将头文件的信息作为数据流输出*/
    curl_setopt($ci, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ci, CURLOPT_MAXREDIRS, 2);/*指定最多的HTTP重定向的数量,这个选项是和CURLOPT_FOLLOWLOCATION一起使用的*/
    curl_setopt($ci, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ci, CURLINFO_HEADER_OUT, true);
    /*curl_setopt($ci, CURLOPT_COOKIE, $Cookiestr); * *COOKIE带过去** */
    $response = curl_exec($ci);
    $requestinfo = curl_getinfo($ci);
    $http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE);
    if ($debug) {
        echo "=====post data======\r\n";
        var_dump($postfields);
        echo "=====info===== \r\n";
        print_r($requestinfo);
        echo "=====response=====\r\n";
        print_r($response);
    }
    curl_close($ci);
    return $response;
    //return array($http_code, $response,$requestinfo);
}

/**
 * 过滤数组元素前后空格 (支持多维数组)
 * @param $array 要过滤的数组
 * @return array|string
 */
function trim_array_element($array){
    if(!is_array($array))
        return trim($array);
    return array_map(&#39;trim_array_element&#39;,$array);
}

/**
 * 检查手机号码格式
 * @param $mobile 手机号码
 */
function check_mobile($mobile){
    if(preg_match(&#39;/1[34578]\d{9}$/&#39;,$mobile))
        return true;
    return false;
}

/**
 * 检查邮箱地址格式
 * @param $email 邮箱地址
 */
function check_email($email){
    if(filter_var($email,FILTER_VALIDATE_EMAIL))
        return true;
    return false;
}


/**
 *   实现中文字串截取无乱码的方法
 */
function getSubstr($string, $start, $length) {
      if(mb_strlen($string,&#39;utf-8&#39;)>$length){
          $str = mb_substr($string, $start, $length,&#39;utf-8&#39;);
          return $str.&#39;...&#39;;
      }else{
          return $string;
      }
}


/**
 * 判断当前访问的用户是  PC端  还是 手机端  返回true 为手机端  false 为PC 端
 * @return boolean
 */
/**
  * 是否移动端访问访问
  *
  * @return bool
  */
function isMobile()
{
        // 如果有HTTP_X_WAP_PROFILE则一定是移动设备
    if (isset ($_SERVER[&#39;HTTP_X_WAP_PROFILE&#39;]))
    return true;

    // 如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息
    if (isset ($_SERVER[&#39;HTTP_VIA&#39;]))
    {
    // 找不到为flase,否则为true
    return stristr($_SERVER[&#39;HTTP_VIA&#39;], "wap") ? true : false;
    }
    // 脑残法,判断手机发送的客户端标志,兼容性有待提高
    if (isset ($_SERVER[&#39;HTTP_USER_AGENT&#39;]))
    {
        $clientkeywords = array (&#39;nokia&#39;,&#39;sony&#39;,&#39;ericsson&#39;,&#39;mot&#39;,&#39;samsung&#39;,&#39;htc&#39;,&#39;sgh&#39;,&#39;lg&#39;,&#39;sharp&#39;,&#39;sie-&#39;,&#39;philips&#39;,&#39;panasonic&#39;,&#39;alcatel&#39;,&#39;lenovo&#39;,&#39;iphone&#39;,&#39;ipod&#39;,&#39;blackberry&#39;,&#39;meizu&#39;,&#39;android&#39;,&#39;netfront&#39;,&#39;symbian&#39;,&#39;ucweb&#39;,&#39;windowsce&#39;,&#39;palm&#39;,&#39;operamini&#39;,&#39;operamobi&#39;,&#39;openwave&#39;,&#39;nexusone&#39;,&#39;cldc&#39;,&#39;midp&#39;,&#39;wap&#39;,&#39;mobile&#39;);
        // 从HTTP_USER_AGENT中查找手机浏览器的关键字
        if (preg_match("/(" . implode(&#39;|&#39;, $clientkeywords) . ")/i", strtolower($_SERVER[&#39;HTTP_USER_AGENT&#39;])))
            return true;
    }
        // 协议法,因为有可能不准确,放到最后判断
    if (isset ($_SERVER[&#39;HTTP_ACCEPT&#39;]))
    {
    // 如果只支持wml并且不支持html那一定是移动设备
    // 如果支持wml和html但是wml在html之前则是移动设备
        if ((strpos($_SERVER[&#39;HTTP_ACCEPT&#39;], &#39;vnd.wap.wml&#39;) !== false) && (strpos($_SERVER[&#39;HTTP_ACCEPT&#39;], &#39;text/html&#39;) === false || (strpos($_SERVER[&#39;HTTP_ACCEPT&#39;], &#39;vnd.wap.wml&#39;) < strpos($_SERVER[&#39;HTTP_ACCEPT&#39;], &#39;text/html&#39;))))
        {
            return true;
        }
    }
            return false;
 } 

//php获取中文字符拼音首字母
function getFirstCharter($str){
      if(empty($str))
      {
            return &#39;&#39;;          
      }
      $fchar=ord($str{0});
      if($fchar>=ord(&#39;A&#39;)&&$fchar<=ord(&#39;z&#39;)) return strtoupper($str{0});
      $s1=iconv(&#39;UTF-8&#39;,&#39;gb2312&#39;,$str);
      $s2=iconv(&#39;gb2312&#39;,&#39;UTF-8&#39;,$s1);
      $s=$s2==$str?$s1:$str;
      $asc=ord($s{0})*256+ord($s{1})-65536;
     if($asc>=-20319&&$asc<=-20284) return &#39;A&#39;;
     if($asc>=-20283&&$asc<=-19776) return &#39;B&#39;;
     if($asc>=-19775&&$asc<=-19219) return &#39;C&#39;;
     if($asc>=-19218&&$asc<=-18711) return &#39;D&#39;;
     if($asc>=-18710&&$asc<=-18527) return &#39;E&#39;;
     if($asc>=-18526&&$asc<=-18240) return &#39;F&#39;;
     if($asc>=-18239&&$asc<=-17923) return &#39;G&#39;;
     if($asc>=-17922&&$asc<=-17418) return &#39;H&#39;;
     if($asc>=-17417&&$asc<=-16475) return &#39;J&#39;;
     if($asc>=-16474&&$asc<=-16213) return &#39;K&#39;;
     if($asc>=-16212&&$asc<=-15641) return &#39;L&#39;;
     if($asc>=-15640&&$asc<=-15166) return &#39;M&#39;;
     if($asc>=-15165&&$asc<=-14923) return &#39;N&#39;;
     if($asc>=-14922&&$asc<=-14915) return &#39;O&#39;;
     if($asc>=-14914&&$asc<=-14631) return &#39;P&#39;;
     if($asc>=-14630&&$asc<=-14150) return &#39;Q&#39;;
     if($asc>=-14149&&$asc<=-14091) return &#39;R&#39;;
     if($asc>=-14090&&$asc<=-13319) return &#39;S&#39;;
     if($asc>=-13318&&$asc<=-12839) return &#39;T&#39;;
     if($asc>=-12838&&$asc<=-12557) return &#39;W&#39;;
     if($asc>=-12556&&$asc<=-11848) return &#39;X&#39;;
     if($asc>=-11847&&$asc<=-11056) return &#39;Y&#39;;
     if($asc>=-11055&&$asc<=-10247) return &#39;Z&#39;;
     return null;
}

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