sentcms/app/common.php

<?php
// +----------------------------------------------------------------------
// | SentCMS [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2013 http://www.tensent.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: molong <molong@tensent.cn> <http://www.tensent.cn>
// +----------------------------------------------------------------------
// 应用公共文件
use think\facade\Session;

define("SENTCMS_VERSION", '4.x');

/**
 *
 */
function is_login() {
	$user = Session::get('userInfo');
	return $user['uid'];
}

function is_administrator() {
	$user = Session::get('userInfo');
	return (int) $user['uid'] === (int) env('rootuid') ? true : false;
}

function form($field = [], $data = []) {
	return \app\http\form\Form::render($field, $data);
}

/**
 * 广告位广告
 * @param string $name 广告位名称
 * @param array $param 参数
 * @return mixed
 */
function ad($name, $param = []){
	return '';
}

function parse_field_bind(){
	
}

function time_format($value){
	return date('Y-m-d H:i:s', $value);
}

/**
 * 获取客户端IP地址
 * @param integer $type 返回类型 0 返回IP地址 1 返回IPV4地址数字
 * @param boolean $adv 是否进行高级模式获取（有可能被伪装）
 * @return mixed
 */
function get_client_ip($type = 0, $adv = false) {
	$type = $type ? 1 : 0;
	static $ip = NULL;
	if ($ip !== NULL) {
		return $ip[$type];
	}

	if ($adv) {
		if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {
			$arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
			$pos = array_search('unknown', $arr);
			if (false !== $pos) {
				unset($arr[$pos]);
			}

			$ip = trim($arr[0]);
		} elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {
			$ip = $_SERVER['HTTP_CLIENT_IP'];
		} elseif (isset($_SERVER['REMOTE_ADDR'])) {
			$ip = $_SERVER['REMOTE_ADDR'];
		}
	} elseif (isset($_SERVER['REMOTE_ADDR'])) {
		$ip = $_SERVER['REMOTE_ADDR'];
	}
	// IP地址合法验证
	$long = sprintf("%u", ip2long($ip));
	$ip = $long ? array($ip, $long) : array('0.0.0.0', 0);
	return $ip[$type];
}

function avatar($uid, $size = 'middle') {
	return request()->root(true) . '/static/common/images/default_avatar_' . $size . '.jpg';
}

// 分析枚举类型配置值 格式 a:名称1,b:名称2
function parse_config_attr($string) {
	$array = preg_split('/[,;\r\n]+/', trim($string, ",;\r\n"));
	if (strpos($string, ':')) {
		$value = array();
		foreach ($array as $val) {
			list($k, $v) = explode(':', $val);
			$value[$k]   = $v;
		}
	} else {
		$value = $array;
	}
	return $value;
}

function mk_dir($dir, $mode = 0755) {
	if (is_dir($dir) || @mkdir($dir, $mode, true)) {
		return true;
	}

	if (!mk_dir(dirname($dir), $mode, true)) {
		return false;
	}

	return @mkdir($dir, $mode, true);
}

/**
 * 字符串转换为数组，主要用于把分隔符调整到第二个参数
 * @param  string $str  要分割的字符串
 * @param  string $glue 分割符
 * @return array
 * @author 麦当苗儿 <zuojiazi@vip.qq.com>
 */
function str2arr($str = '', $glue = ',') {
	if ($str) {
		return explode($glue, $str);
	} else {
		return array();
	}
}

/**
 * 数组转换为字符串，主要用于把分隔符调整到第二个参数
 * @param  array  $arr  要连接的数组
 * @param  string $glue 分割符
 * @return string
 * @author 麦当苗儿 <zuojiazi@vip.qq.com>
 */
function arr2str($arr = array(), $glue = ',') {
	if (empty($arr)) {
		return '';
	} else {
		return implode($glue, $arr);
	}
}

/**
 * 格式化字节大小
 * @param  number $size      字节数
 * @param  string $delimiter 数字和单位分隔符
 * @return string            格式化后的带单位的大小
 * @author 麦当苗儿 <zuojiazi@vip.qq.com>
 */
function format_bytes($size, $delimiter = '') {
	$units = array('B', 'KB', 'MB', 'GB', 'TB', 'PB');
	for ($i = 0; $size >= 1024 && $i < 5; $i++) {
		$size /= 1024;
	}

	return round($size, 2) . $delimiter . $units[$i];
}


/**
 * 获取文档封面图片
 * @param int $cover_id
 * @param string $field
 * @return 完整的数据  或者  指定的$field字段值
 * @author huajie <banhuajie@163.com>
 */
function get_cover($cover_id, $field = null) {
	if (empty($cover_id)) {
		return BASE_PATH . '/static/images/default.png';
	}
	$base_path = "";
	$picture = \think\facade\Db::name('Picture')->where(array('status' => 1, 'id' => $cover_id))->find();
	if ($field == 'path') {
		if (!empty($picture['url'])) {
			$picture['path'] = $picture['url'] ? $base_path . $picture['url'] : $base_path . '/static/images/default.png';
		} else {
			$picture['path'] = $picture['path'] ? $base_path . $picture['path'] : $base_path . '/static/images/default.png';
		}
	}
	return empty($field) ? $picture : $picture[$field];
}