php ip地址轉換整數，整數轉換地址

$ipArr    = explode('.',$_SERVER['REMOTE_ADDR']);     $ipVal = $ipArr[0] * 0x1000000            + $ipArr[1] * 0x10000            + $ipArr[2] * 0x100            + $ipArr[3]            ;        echo$ipVal.'
';         $ipArr = array(0 => floor( $ipVal/ 0x1000000) );        $ipVint   = $ipVal-($ipArr[0]*0x1000000); // for clarity$ipArr[1] = ($ipVint & 0xFF0000)  >> 16;        $ipArr[2] = ($ipVint & 0xFF00  )  >> 8;        $ipArr[3] =  $ipVint & 0xFF;        $ipDotted = implode('.', $ipArr);        echo$ipDotted;$ipArr    = explode('.',$_SERVER['REMOTE_ADDR']);  $ip       = $ipArr[0] * 0x1000000            + $ipArr[1] * 0x10000            + $ipArr[2] * 0x100            + $ipArr[3]            ;?>This can be written in a bit more efficient way:$ipArr    = explode('.',$_SERVER['REMOTE_ADDR']);  $ip       = $ipArr[0]<<24            + $ipArr[1]<<16            + $ipArr[2] <<8            + $ipArr[3]            ;?>shift is more cheaper.

').addClass('pre-numbering').hide(); $(this).addClass('has-numbering').parent().append($numbering); for (i = 1; i <= lines; i++) { $numbering.append($('

').text(i)); }; $numbering.fadeIn(1700); }); });

以上就介紹了php ip地址轉換整數，整數轉換地址，包括了方面的內容，希望對PHP教程有興趣的朋友有所協助。

