我想创建简单的脚本来检查域的可用性。谁能告诉我,这个功能是否足以检查域名可用性之前,用户可以注册:
<?php
$recordexists = checkdnsrr("www.google.com", "ANY");
if ($recordexists)
echo "The domain name has been taken. Sorry!";
else
echo "The domain name is available!";
?>
或者我应该使用像这样的其他whois脚本
有没有办法安装gcc-g++ (例如)而不使用订阅管理器?
sudo yum upgrade gcc-c++
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