常用PHP方法

个人常用的一些方法记录
/**
 * 返回错误
 *
 * @param int $err_no
 * @param string $err_msg 
 * @param array $data                  
 * @return array
 */
function returnError($err_no = 0, $err_msg = '', $data = [])
{
    // 错误配置
    $config = config('error');
    // 错误信息
    $error = [
        'err_no' => $err_no,
        'err_msg' => empty($err_msg) ? $config[$err_no] : $err_msg,
        'data' => $data
    ];
    // 返回
    return $error;
}

/**
 * 错误响应
 *
 * @param int $err_no            
 * @param string $err_msg            
 * @param array $data            
 * @param string $jsonp            
 * @return \Illuminate\Http\Response
 */
function response($err_no = 0, $err_msg = '', $data = [], $jsonp = '')
{
    // 错误配置
    $config = config('error');
    // 错误信息
    $error = [
        'err_no' => $err_no,
        'err_msg' => empty($err_msg) ? $config[$err_no] : $err_msg,
        'data' => $data
    ];
    // 格式化
    $result = response()->json($error);
    empty($jsonp) || $result->setCallback($jsonp);
    // 返回
    return $result;
}

/**
 * CURL
 *
 * @param string $url            
 * @param string $type
 *            [GET|POST]
 * @param array|string $data            
 * @param array $header            
 * @return bool|string
 */
function curlRequest($url = '', $type = 'GET', $data = '', $header = [])
{
    // 参数校验
    if (empty($url) || ! in_array(strtoupper($type), [
        'GET',
        'POST',
        'PUT',
        'DELETE'
    ])) {
        return false;
    }
    // 初始化
    $ch = curl_init();
    if (! $ch) {
        return false;
    }
    // 请求参数
    $data = is_array($data) ? http_build_query($data) : $data;
    // 请求方式
    if (strtoupper($type) == 'POST') {
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    }
    if (strtoupper($type) == 'GET') {
        empty($data) || $url .= '?' . $data;
    }
    if (strtoupper($type) == 'PUT') {
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    }
    if (strtoupper($type) == 'DELETE') {
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'DELETE');
    }
    // 通用配置
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    curl_setopt($ch, CURLOPT_TIMEOUT, 10);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    // 头信息
    if (! empty($header)) {
        curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
    }
    // 执行请求
    $result = curl_exec($ch);
    // 错误信息
    // $err_no = curl_errno($ch);
    // $err_info = curl_getinfo($ch);
    // 关闭资源
    curl_close($ch);
    // 返回
    return $result;
}

/**
 * 数组转XML[解析：simplexml_load_string($param, 'SimpleXMLElement', LIBXML_NOCDATA)]
 *
 * @param array $param            
 * @return string
 */
function convertXml($param = [])
{
    // 初始化
    $xml = '';
    // 循环
    foreach ($param as $k => $v) {
        $xml .= "<{$k}><![CDATA[{$v}]]></{$k}>";
    }
    // 返回
    return sprintf('<xml>%s</xml>', $xml);
}

/**
 * 写入日志|自定义文件
 *
 * @param string $file            
 * @param array $logs            
 * @return bool
 */
function debug($file = 'debug', $logs = [], $code = 'Debug')
{
    // 文件路径
    $path = storage_path("logs/{$file}.log");
    // 日志内容
    $data = sprintf('[%s] %s %s%s', date('Y-m-d H:i:s'), $code, json_encode($logs, 320), PHP_EOL);
    // 写入日志
    $result = file_put_contents($path, $data, FILE_APPEND);
    // 返回
    return $result === false ? false : true;
}

/**
 * 导出CSV
 *
 * @param string $filename            
 * @param string $data            
 */
function exportCsv($filename = '', $data = array())
{
    header("Content-type:text/csv");
    header("Content-Disposition:attachment;filename={$filename}.csv");
    header('Cache-Control:must-revalidate,post-check=0,pre-check=0');
    header('Expires:0');
    header('Pragma:public');
    $output = '';
    foreach ($data as $v) {
        foreach ($v as $v2) {
            $output .= mb_convert_encoding($v2, 'GBK', 'UTF-8') . ',';
        }
        $output .= "\n";
    }
    exit($output);
}

/**
 * 获取当前URL
 *
 * @return string
 */
function getCurrUrl()
{
    $sys_protocal = isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == '443' ? 'https://' : 'http://';
    $php_self = $_SERVER['PHP_SELF'] ? $_SERVER['PHP_SELF'] : $_SERVER['SCRIPT_NAME'];
    $path_info = isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : '';
    $relate_url = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : $php_self . (isset($_SERVER['QUERY_STRING']) ? '?' . $_SERVER['QUERY_STRING'] : $path_info);
    $curr_url = $sys_protocal . (isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '') . $relate_url;
    return urlencode($curr_url);
}

/**
 * 生成唯一ID
 *
 * @return string
 */
function uniqueId()
{
    // 时间+随机数
    return sprintf('%s%04s', date('YmdHis'), mt_rand(0, 9999));
}

/**
 * 根据字典名称获取数据字典
 *
 * @param string $name            
 * @return mixed
 */
function getConf($name = '', $site_id = 0)
{
    if (empty($name)) {
        return false;
    }
    $data = DB::table('dictionary')->where('site_id', $site_id)
        ->where('name', strtolower($name))
        ->first();
    if ($data) {
        // 单值模式
        if ($data['type_id'] == 1) {
            return json_decode($data['value'], true);
        } elseif ($data['type_id'] == 2) {
            // 查询字典列表
            $list = DB::table('dictionary_list')->select([
                'key_name',
                'key_value'
            ])
                ->where('dictionary_id', $data['id'])
                ->get()
                ->toArray();
            return empty($list) ? [] : $list;
        }
    }
    return false;
}

/**
 * 格式化金额|四舍五入保留2位小数
 *
 * @param float $money            
 * @return string
 */
function moneyFormat($money = 0)
{
    // 格式化并返回
    return sprintf('%.2f', floatval($money));
}

/**
 * 数组排序
 *
 * @param string $key            
 * @param array $arr            
 * @param number $order            
 * @return boolean|multitype
 */
function arrSort($key = '', $arr = [], $order = 1)
{
    $res = [];
    // 产生结构数组
    foreach ($arr as $k => $v) {
        $res[$v[$key]] = isset($res[$v[$key]]) ? array_merge($res[$v[$key]], [
            $k
        ]) : [
            $k
        ];
    }
    
    if ($order == 1) {
        // 升序
        ksort($res);
    } elseif ($order == 0) {
        // 降序
        krsort($res);
    } else {
        return false;
    }
    $rs = [];
    // 组装数组
    foreach ($res as $value) {
        foreach ($value as $n) {
            $rs[] = $arr[$n];
        }
    }
    // 返回结果
    return $rs;
}

/**
 * 计算每期的日期(当前日减一天|当月不足则取最后一天)
 *
 * @param string $start_date            
 * @param int $total_month            
 * @param bool $return_last            
 * @return array|string
 */
function calculateDate($start_date, $total_month, $return_last = false)
{
    // 开始时间
    $start_day = intval(date('j', strtotime($start_date)));
    $start_time = strtotime('-1 day', strtotime($start_date));
    // 当前年月日
    $curr_year = intval(date('Y', $start_time));
    $curr_month = intval(date('n', $start_time));
    $curr_day = intval(date('j', $start_time));
    // 格式化数组
    $date = [
        $start_date
    ];
    // 循环计算
    for ($i = 1; $i <= $total_month; $i ++) {
        // 年
        if (($curr_month + $i) % 12 == 0) {
            $year = $curr_year + ($curr_month + $i) / 12 - 1;
        } else {
            $year = $curr_year + floor(($curr_month + $i) / 12);
        }
        // 月
        $month = ($curr_month + $i) % 12;
        $month = ($month == 0 ? 12 : $month);
        // 日
        $curr_month_days = intval(date('t', strtotime("{$year}-{$month}-01")));
        $day = $start_day == 1 ? $curr_month_days : min($curr_day, $curr_month_days);
        // 当期时间
        $date[] = sprintf('%04d-%02d-%02d', $year, $month, $day);
    }
    // 返回
    if ($return_last) {
        // 返回最后一期
        return array_pop($date);
    } else {
        // 返回所有日期
        return $date;
    }
}

/**
 * 验证手机是否有效
 */
function isMobile($subject = '')
{
    $pattern = "/^1[3|4|5|7|8][0-9]{9}$/";
    if (preg_match($pattern, $subject)) {
        return true;
    }
    return false;
}

/**
 * 数字转中文
 *
 * @param unknown $num            
 * @param number $m            
 */
function numberToChinese($num)
{
    $CNum = [
        [
            '零',
            '一',
            '二',
            '三',
            '四',
            '五',
            '六',
            '七',
            '八',
            '九'
        ],
        [
            '',
            '十',
            '百',
            '千'
        ],
        [
            '',
            '万',
            '亿',
            '万亿'
        ]
    ];
    // 验证是否是数字
    if (! is_numeric($num)) {
        return false;
    }
    
    $flt = '';
    if (is_integer($num)) {
        $num = strval($num);
    } else 
        if (is_numeric($num)) {
            $num = strval($num);
            $rs = explode('.', $num, 2);
            $num = $rs[0];
            $flt = $rs[1];
        }
    
    $len = strlen($num);
    $num = strrev($num);
    $chinese = '';
    
    for ($i = 0, $k = 0; $i < $len; $i += 4, $k ++) {
        $tmp_str = '';
        $str = strrev(substr($num, $i, 4));
        $str = str_pad($str, 4, '0', STR_PAD_LEFT);
        for ($j = 0; $j < 4; $j ++) {
            if ($str{$j} !== '0') {
                $tmp_str .= $CNum[0][$str{$j}] . $CNum[1][4 - 1 - $j];
            }
        }
        $tmp_str .= $CNum[2][$k];
        $chinese = $tmp_str . $chinese;
        unset($str);
    }
    if ($flt !== '') {
        $str = '';
        for ($i = 0; $i < strlen($flt); $i ++) {
            $str .= $CNum[0][$flt{$i}];
        }
        $chinese .= "点{$str}";
    }
    return $chinese;
}

/**
 * 数字金额转换成中文大写金额的函数
 * String Int $num 要转换的小写数字或小写字符串
 * return 大写字母
 * 小数位为两位
 */
function getAmount($num)
{
    $c1 = "零壹贰叁肆伍陆柒捌玖";
    $c2 = "分角元拾佰仟万拾佰仟亿";
    $num = round($num, 2);
    $num = $num * 100;
    if (strlen($num) > 10) {
        return "数据格式错误";
    }
    $i = 0;
    $c = "";
    while (1) {
        if ($i == 0) {
            $n = substr($num, strlen($num) - 1, 1);
        } else {
            $n = $num % 10;
        }
        $p1 = substr($c1, 3 * $n, 3);
        $p2 = substr($c2, 3 * $i, 3);
        if ($n != '0' || ($n == '0' && ($p2 == '亿' || $p2 == '万' || $p2 == '元'))) {
            $c = $p1 . $p2 . $c;
        } else {
            $c = $p1 . $c;
        }
        $i = $i + 1;
        $num = $num / 10;
        $num = (int) $num;
        if ($num == 0) {
            break;
        }
    }
    $j = 0;
    $slen = strlen($c);
    while ($j < $slen) {
        $m = substr($c, $j, 6);
        if ($m == '零元' || $m == '零万' || $m == '零亿' || $m == '零零') {
            $left = substr($c, 0, $j);
            $right = substr($c, $j + 3);
            $c = $left . $right;
            $j = $j - 3;
            $slen = $slen - 3;
        }
        $j = $j + 3;
    }
    
    if (substr($c, strlen($c) - 3, 3) == '零') {
        $c = substr($c, 0, strlen($c) - 3);
    }
    if (empty($c)) {
        return "零元整";
    } else {
        return $c . "整";
    }
}