boniu/lib/function_common.inc.php

<?php

/**
 * 此文件放置与业务无关的函数
 * 与业务无关是指不依赖于项目本身，不同项目或多种环境下可以通用
 *
 * 与业务有关的函数放置于function.inc.php 
 * 系统环境有关的函数见lib/common/Env类
 * 参数检查有关的函数见lib/common/ParamCheck类
 *
 * @createtime	2018/03/01
 * @author		空竹
 * @copyright	芝麻开发(http://www.zhimawork.com)
 */

/**
 * safeCheck() 参数检查，并防XSS 和 SQL注入
 * 
 * @param mixed $str   
 * @param bool $number 是否做数字检查 1-（默认）数字 0-不是数字
 * @param bool $script 是否过滤script 1-（默认）过滤；0-不过滤
 * @return
 */
function safeCheck($str, $number = 1, $script = 1){
	$str = trim($str);
	//防止SQL注入
	if(!get_magic_quotes_gpc()){
		$str = addslashes($str);
	}
	//数字检查
	if($number == 1){
		$isint   = preg_match('/^-?\d+$/',$str);
		$isfloat = preg_match('/^(-?\d+)(\.\d+)?$/',$str);
		if(!$isint && !$isfloat){
			die('参数必须为数字');
		}
	}else{
		//过滤script、防XSS
		if($script == 1){
			$str = htmlspecialchars($str);
		}
	}
	return $str;
}

/**
 * ckReplace()  ckEditor编辑器内容处理
 * 
 * @param mixed $content
 * @return
 */
function ckReplace($content){
	if (!empty($content)){
		$content = str_replace("'", "&#39;", $content);
        $content = str_replace("<br />", "</p><p>", $content);
	}
	return $content;
}

/**
 * HTMLEncode()将特殊字符转成HTML格式，主要用于textarea获取值 
 * 
 * @param mixed $str
 * @return
 */
function HTMLEncode($str){
	if (!empty($str)){
		$str = str_replace("&","&amp;",$str);
		$str = str_replace(">","&gt;",$str);
		$str = str_replace("<","&lt;",$str);
		$str = str_replace(CHR(32),"&nbsp;",$str);
		$str = str_replace(CHR(9),"&nbsp;&nbsp;&nbsp;&nbsp;",$str);
		$str = str_replace(CHR(9),"&#160;&#160;&#160;&#160;",$str);
		$str = str_replace(CHR(34),"&quot;",$str);
		$str = str_replace("'","&#39;",$str);
		$str = str_replace(CHR(39),"&#39;",$str);
		$str = str_replace(CHR(13),"",$str);
		$str = str_replace(CHR(10),"<br/>",$str);
	}
	return $str;
}

/**
 * HTMLDecode()将HTMLEncode的数据还原 
 * 
 * @param mixed $str
 * @return
 */
Function HTMLDecode($str){
	if (!empty($str)){
		$str = str_replace("&amp;","&",$str);
		$str = str_replace("&gt;",">",$str);
		$str = str_replace("&lt;","<",$str);
		$str = str_replace("&nbsp;",CHR(32),$str);
		$str = str_replace("&nbsp;&nbsp;&nbsp;&nbsp;",CHR(9),$str);
		$str = str_replace("&#160;&#160;&#160;&#160;",CHR(9),$str);
		$str = str_replace("&quot;",CHR(34),$str);
		$str = str_replace("&#39;",CHR(39),$str);
		$str = str_replace("",CHR(13),$str);
		$str = str_replace("<br/>",CHR(10),$str);
		$str = str_replace("<br />",CHR(10),$str);
		$str = str_replace("<br>",CHR(10),$str);
	}
	return $str;
}

/**
 * 生成随机数randcode()
 * 
 * @param mixed $len
 * @param integer $mode
 * @return
 */
function randcode($len, $mode = 2){
	$rcode = '';

	switch($mode){
		case 1: //去除0、o、O、l等易混淆字符
			$chars = 'ABCDEFGHJKLMNPQRSTUVWXYZ23456789abcdefghijkmnpqrstuvwxyz';
			break;
		case 2: //纯数字
			$chars = '0123456789';
			break;
		case 3: //全数字+大小写字母
			$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz';
			break;
		case 4: //全数字+大小写字母+一些特殊字符
			$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz~!@#$%^&*()';
			break;
	}
	
	$count = strlen($chars) - 1;
	mt_srand((double)microtime() * 1000000);
	for($i = 0; $i < $len; $i++) {
		$rcode .= $chars[mt_rand(0, $count)];
	}
	
	return $rcode;
}

/**
 * Json_encode的Unicode中文(\u4e2d\u56fd)问题
 * 
 * @param mixed $array
 * @return
 */
function json_encode_cn($array){
	$str = json_encode($array);
	$os  = Env::getOSType();
	if($os == 'windows')
		$ucs = 'UCS-2';
	else
		$ucs = 'UCS-2BE';
	
	if (version_compare(PHP_VERSION, '5.5.0') >= 0) {
		$str = preg_replace_callback("/\\\\u([0-9a-f]{4})/i", function($matches) use($ucs){return iconv($ucs, "UTF-8", pack("H*", $matches[1]));}, $str);
	/** //2018/12/23 修正PHP7.2以上版本不支持create_function
	}else if (version_compare(PHP_VERSION, '5.5.0') >= 0) {
		$str = preg_replace_callback("/\\\\u([0-9a-f]{4})/i", create_function('$matches', 'return iconv("'.$ucs.'", "UTF-8", pack("H*", $matches[1]));'), $str);
	**/
	}else{
		$str = preg_replace("#\\\u([0-9a-f]{4})#ie", "iconv('".$ucs."', 'UTF-8', pack('H4', '\\1'))", $str);
	}
	return $str;
}

/**
 * 操作响应通知(默认json格式)
 * 
 * @param $msg  消息内容
 * @param $code 消息代码
 * @return
 */
function action_msg($msg, $code, $json = true){
	$r = array(
		'code' => $code,
		'msg'  => $msg
	);
	if($json) 
		return json_encode_cn($r);
	else
		return $r;
}

/**
 * 检测图片宽高是否符合要求，常用于图片上传
 * @param	$filepath		文件绝对路径
 * @param	$targetWidth	目标宽度
 * @param	$targetHeight	目标高度
 * @return  bool
 */
function checkImgSize($filepath, $targetWidth, $targetHeight) {
	$imageinfo = getimagesize($filepath);

	if ($imageinfo[0] != $targetWidth || $imageinfo[1] != $targetHeight) {
		return false;
	}
	return true;
}
?>