PHP IP 주소 변환 정수, 정수 변환 주소-PHP 튜토리얼-php.cn

PHP IP 주소 변환 정수, 정수 변환 주소

WBOY

풀어 주다： 2016-07-29 09:09:44

원래의

1729명이 탐색했습니다.

<code><span>$ipArr</span>    = explode(<span>'.'</span>,<span>$_SERVER</span>[<span>'REMOTE_ADDR'</span>]);



     <span>$ipVal</span> = <span>$ipArr</span>[<span>0</span>] * <span>0x1000000</span>
            + <span>$ipArr</span>[<span>1</span>] * <span>0x10000</span>
            + <span>$ipArr</span>[<span>2</span>] * <span>0x100</span>
            + <span>$ipArr</span>[<span>3</span>]
            ;

        <span>echo</span><span>$ipVal</span>.<span>'<br/>'</span>;

         <span>$ipArr</span> = <span>array</span>(<span>0</span> => floor( <span>$ipVal</span>/ <span>0x1000000</span>) );

        <span>$ipVint</span>   = <span>$ipVal</span>-(<span>$ipArr</span>[<span>0</span>]*<span>0x1000000</span>); <span>// for clarity</span><span>$ipArr</span>[<span>1</span>] = (<span>$ipVint</span> & <span>0xFF0000</span>)  >> <span>16</span>;

        <span>$ipArr</span>[<span>2</span>] = (<span>$ipVint</span> & <span>0xFF00</span>  )  >> <span>8</span>;

        <span>$ipArr</span>[<span>3</span>] =  <span>$ipVint</span> & <span>0xFF</span>;

        <span>$ipDotted</span> = implode(<span>'.'</span>, <span>$ipArr</span>);

        <span>echo</span><span>$ipDotted</span>;















<span><?php</span><span>$ipArr</span>    = explode(<span>'.'</span>,<span>$_SERVER</span>[<span>'REMOTE_ADDR'</span>]);
  <span>$ip</span>       = <span>$ipArr</span>[<span>0</span>] * <span>0x1000000</span>
            + <span>$ipArr</span>[<span>1</span>] * <span>0x10000</span>
            + <span>$ipArr</span>[<span>2</span>] * <span>0x100</span>
            + <span>$ipArr</span>[<span>3</span>]
            ;
<span>?></span>This can be written in a bit more efficient way:
<span><?php</span><span>$ipArr</span>    = explode(<span>'.'</span>,<span>$_SERVER</span>[<span>'REMOTE_ADDR'</span>]);
  <span>$ip</span>       = <span>$ipArr</span>[<span>0</span>]<<<span>24</span>
            + <span>$ipArr</span>[<span>1</span>]<<<span>16</span>
            + <span>$ipArr</span>[<span>2</span>] <<<span>8</span>
            + <span>$ipArr</span>[<span>3</span>]
            ;
<span>?></span>shift is more cheaper.</code>

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위의 내용을 포함하여 PHP IP 주소와 정수 변환 주소의 정수 변환을 소개합니다. PHP 튜토리얼에 관심이 있는 친구들에게 도움이 되길 바랍니다.