<?php $ip = gethostbyname ( 'www.baidu.com' ); $long = ip2long ( $ip ); if ( $long == - 1 || $long === FALSE ) { echo 'Invalid IP, please try again' ; } else { echo $ip . "\n" ; // 192.0.34.166 echo $long . "\n" ; // -1073732954 printf ( "%u\n" , ip2long ( $ip )); // 3221234342 }
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