3v4l.org

run code in 300+ PHP versions simultaneously
<?php $whoisserver = "whois.verisign-grs.co"; $domain = "=stackoverflow.com"; $port = 43; $timeout = 10; $fp = @fsockopen($whoisserver, $port, $errno, $errstr, $timeout) or die("Socket Error " . $errno . " - " . $errstr); fputs($fp, $domain . "\r\n"); $out = ""; while(!feof($fp)){ $out .= fgets($fp); } fclose($fp); $res = ""; if((strpos(strtolower($out), "error") === FALSE) && (strpos(strtolower($out), "not allocated") === FALSE)) { $rows = explode("\n", $out); foreach($rows as $row) { $row = trim($row); if(($row != '') && ($row{0} != '#') && ($row{0} != '%')) { $res .= $row."\n"; } } } print $res;

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41.36 ms | 402 KiB | 5 Q