常用自定义函数-php手册-php.cn

编码常用的一些函数如获取IP发送邮件curl封装加解密字符串对象转数组后面会有补充无 //获取IPfunction ip(){if(getenv('X-Forwarded-For')strcasecmp(getenv('X-Forwarded-For'), 'unknown')){$ip = getenv('X-Forwarded-For');}elseif(getenv('HTTP_CLIENT_
编码常用的一些函数如获取IP 发送邮件 curl封装加解密字符串对象转数组后面会有补充
//获取IP
function ip()
{
	if(getenv('X-Forwarded-For')&&strcasecmp(getenv('X-Forwarded-For'), 'unknown'))
	{
		$ip = getenv('X-Forwarded-For');
	}
	elseif(getenv('HTTP_CLIENT_IP')&&strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown'))
	{
		$ip = getenv('HTTP_CLIENT_IP');
	}
	elseif(getenv('HTTP_X_FORWARDED_FOR')&&strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown'))
	{
		$ip = getenv('HTTP_X_FORWARDED_FOR');
	}
	elseif(getenv('REMOTE_ADDR')&&strcasecmp(getenv('REMOTE_ADDR'), 'unknown'))
	{
		$ip = getenv('REMOTE_ADDR');
	}
	elseif(isset($_SERVER['REMOTE_ADDR'])&&$_SERVER['REMOTE_ADDR']&&strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown'))
	{
		$ip = $_SERVER['REMOTE_ADDR'];
	}
	return preg_match("/[\d\.]{7,15}/", $ip, $matches) ? $matches[0] : 'unknown';
}
//curl封装
function curl($url, $method = 'GET', $postFields = null, $header = null)
{
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
	curl_setopt($ch, CURLOPT_FAILONERROR, false);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
	curl_setopt($ch, CURLOPT_TIMEOUT, 5);

	if (strlen($url) > 5 && strtolower(substr($url, 0, 5)) == "https")
	{
		curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
		curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	}

	switch ($method)
	{
		case 'POST':
			curl_setopt($ch, CURLOPT_POST, true);
			if (!empty($postFields))
			{
				if (is_array($postFields) || is_object($postFields))
				{
					if (is_object($postFields))
						$postFields = Bin_Tools::object2array($postFields);
					$postBodyString = "";
					$postMultipart = false;
					foreach ($postFields as $k => $v)
					{
						if ("@" != substr($v, 0, 1))
						{ //判断是不是文件上传
							$postBodyString .= "$k=" . urlencode($v) . "&";
						}
						else
						{ //文件上传用multipart/form-data，否则用www-form-urlencoded
							$postMultipart = true;
						}
					}
					unset($k, $v);
					if ($postMultipart)
					{
						curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);
					}
					else
					{
						curl_setopt($ch, CURLOPT_POSTFIELDS, substr($postBodyString, 0, -1));
					}
				}
				else
				{
					curl_setopt($ch, CURLOPT_POSTFIELDS, $postFields);
				}

			}
			break;
		default:
			if (!empty($postFields) && is_array($postFields))
				$url .= (strpos($url, '?') === false ? '?' : '&') . http_build_query($postFields);
			break;
	}
	curl_setopt($ch, CURLOPT_URL, $url);

	if (!empty($header) && is_array($header))
	{
		curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
	}
	$response = curl_exec($ch);
	if (curl_errno($ch))
	{
		throw new Exception(curl_error($ch), 0);
	}
	curl_close($ch);

	return $response;
}
//对象转数组
function object_to_array($obj)
{
	$_arr = is_object($obj) ? get_object_vars($obj) : $obj;
	foreach ($_arr as $key => $val)
	{
		$val       = (is_array($val) || is_object($val)) ? object_to_array($val) : $val;
		$arr[$key] = $val;
	}
	return $arr;
}
//发送邮件 基于phpmailer
function sendmail($to, $title, $content)
{
	$mail = new lib_phpmail_phpmail();
	$mail->CharSet    ="UTF-8";
	$mail->IsSMTP();
	$mail->SMTPAuth   = true;
	$mail->SMTPSecure = "ssl";
	$mail->Host       = "11.111.11.11:465";
	$mail->Port       = 25;
	$mail->Username   = "aaa@aaa.com";
	$mail->Password   = "123abc";
	$mail->SetFrom('aaa@aaa.com', 'info');
	$mail->AddAddress($to);
	$mail->IsHTML(true);
	$mail->Subject    = $title;
	$mail->Body       = $content;
	return $mail->Send();
}
//加密字符串
function encrypt($encrypt,$key="key") {
	$iv = mcrypt_create_iv ( mcrypt_get_iv_size ( MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB ), MCRYPT_RAND );
	$passcrypt = mcrypt_encrypt ( MCRYPT_RIJNDAEL_256, $key, $encrypt, MCRYPT_MODE_ECB, $iv );
	$encode = base64_encode ( $passcrypt );
	return $encode;
}

//解密字符串
function decrypt($decrypt,$key="key") {
	$decoded = base64_decode ( $decrypt );
	$iv = mcrypt_create_iv ( mcrypt_get_iv_size ( MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB ), MCRYPT_RAND );
	$decrypted = mcrypt_decrypt ( MCRYPT_RIJNDAEL_256, $key, $decoded, MCRYPT_MODE_ECB, $iv );
	return $decrypted;
}

//分页
    function getPage($count, $pageNum, $pagesize, $linksize = 10)
    {
        if($count == 0) return '';
        $totalPage = ceil($count/$pagesize);
        $p = 'page';
        $request_url = $_SERVER['REQUEST_URI'];
        if(strpos($request_url,'?'))
        {
            $url  =  $request_url;
        }
        else
        {
            $url  =  $request_url.'?';
        }
        $parse = parse_url($url);
        if(isset($parse['query'])) 
        {
            parse_str($parse['query'],$params);
            unset($params[$p]);
            $url   =  $parse['path'].'?'.http_build_query($params);
        }
        
        //首页 尾页
        if($pageNum > 1)
        {
            $firstPage = '<li><a href=\''.$url.'&'.$p.'=1\'>首页 </a></li>';
        }
        if($pageNum < $totalPage)
        {
            $endPage = '<li><a href=\''.$url.'&'.$p.'='.$totalPage.'\'> 尾页</a></li>';
        }

        //上一页 下一页
        $upRow   = $pageNum - 1;
        $downRow = $pageNum + 1;
        $upPage = $downPage = '';
        if ($upRow > 0)
        {
            $upPage='<li><a href=\''.$url.'&'.$p.'='.$upRow.'\'>上一页</a></li>';
        }
        if ($downRow <= $totalPage)
        {
            $downPage='<li><a href=\''.$url.'&'.$p.'='.$downRow.'\'>下一页</a></li>';
        }

        //计算起始、结束页码
        $start = max(1, $pageNum - intval($linksize/2));
        $end   = min($start + $linksize - 1, $totalPage);
        $start = max(1, $end - $linksize + 1);
        $pageStr = '';
        for($i = $start; $i <= $end; $i++)
        {
            if($i == $pageNum)
            {
                $pageStr .= '<li> '.$i.' </li>';
            }
            else
            {
                $pageStr .= '<li><a href=\''.$url.'&'.$p.'='.$i.'\'> '.$i.' </a></li>';
            }
        }

        $pageStr = $firstPage . $upPage . $pageStr . $downPage . $endPage;
        $pageStr .= '<li>  共'.$totalPage.'页';
        return $pageStr;
    }

//编码转汉字
    public function entities2utf8($unicode_c){
        $unicode_c = preg_replace_callback("/\&\#(.+?)\;/", function($unicode_str){
            $unicode_c_val = hexdec($unicode_str[1]);
            $f=0x80; // 10000000
            $str = "";
            // U-00000000 - U-0000007F:   0xxxxxxx
            if($unicode_c_val <= 0x7F)
            {
                $str = chr($unicode_c_val);
            }
            //U-00000080 - U-000007FF:  110xxxxx 10xxxxxx
            else if($unicode_c_val >= 0x80 && $unicode_c_val <= 0x7FF)
            {
                $h=0xC0; // 11000000
                $c1 = $unicode_c_val >> 6 | $h;
                $c2 = ($unicode_c_val & 0x3F) | $f;
                $str = chr($c1).chr($c2);
            }
            //U-00000800 - U-0000FFFF:  1110xxxx 10xxxxxx 10xxxxxx
            else if($unicode_c_val >= 0x800 && $unicode_c_val <= 0xFFFF)
            {
                $h=0xE0; // 11100000
                $c1 = $unicode_c_val >> 12 | $h;
                $c2 = (($unicode_c_val & 0xFC0) >> 6) | $f;
                $c3 = ($unicode_c_val & 0x3F) | $f;
                $str=chr($c1).chr($c2).chr($c3);  
            }
            //U-00010000 - U-001FFFFF:  11110xxx 10xxxxxx 10xxxxxx 10xxxxxx
            else if($unicode_c_val >= 0x10000 && $unicode_c_val <= 0x1FFFFF)
            {
                $h=0xF0; // 11110000
                $c1 = $unicode_c_val >> 18 | $h;
                $c2 = (($unicode_c_val & 0x3F000) >>12) | $f;
                $c3 = (($unicode_c_val & 0xFC0) >>6) | $f;
                $c4 = ($unicode_c_val & 0x3F) | $f;
                $str = chr($c1).chr($c2).chr($c3).chr($c4);
            }
            //U-00200000 - U-03FFFFFF:  111110xx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
            else if($unicode_c_val >= 0x200000 && $unicode_c_val <= 0x3FFFFFF)
            {
                $h=0xF8; // 11111000
                $c1 = $unicode_c_val >> 24 | $h;
                $c2 = (($unicode_c_val & 0xFC0000)>>18) | $f;
                $c3 = (($unicode_c_val & 0x3F000) >>12) | $f;
                $c4 = (($unicode_c_val & 0xFC0) >>6) | $f;
                $c5 = ($unicode_c_val & 0x3F) | $f;
                $str = chr($c1).chr($c2).chr($c3).chr($c4).chr($c5);
            }
            //U-04000000 - U-7FFFFFFF:  1111110x 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx 10xxxxxx
            else if($unicode_c_val >= 0x4000000 && $unicode_c_val <= 0x7FFFFFFF)
            {
                $h=0xFC; // 11111100
                $c1 = $unicode_c_val >> 30 | $h;
                $c2 = (($unicode_c_val & 0x3F000000)>>24) | $f;
                $c3 = (($unicode_c_val & 0xFC0000)>>18) | $f;
                $c4 = (($unicode_c_val & 0x3F000) >>12) | $f;
                $c5 = (($unicode_c_val & 0xFC0) >>6) | $f;
                $c6 = ($unicode_c_val & 0x3F) | $f;
                $str = chr($c1).chr($c2).chr($c3).chr($c4).chr($c5).chr($c6);
            }
            return $str;
        }, $unicode_c);
        return $unicode_c;
    }
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