Network 函数
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checkdnsrr

(PHP 4, PHP 5)

checkdnsrrCheck DNS records corresponding to a given Internet host name or IP address

说明

bool checkdnsrr ( string $host [, string $type ] )

Searches DNS for records of type type corresponding to host .

参数

host

host may either be the IP address in dotted-quad notation or the host name.

type

type may be any one of: A, MX, NS, SOA, PTR, CNAME, AAAA, A6, SRV, NAPTR, TXT or ANY. The default is MX.

返回值

Returns TRUE if any records are found; returns FALSE if no records were found or if an error occurred.

更新日志

版本 说明
5.3.0 This function is now available on Windows platforms.
5.2.4 TXT type was added.
5.0.0 AAAA type was added.

注释

Note: For compatiblity with Windows before this was implemented, then try the » PEAR class » Net_DNS.

参见


Network 函数
php 手册 | 脚本学堂 | 脚本编程 | 网站编程 | 系统管理 | 服务器配置 | 数据库管理 | Php教程 | python教程 | 正则表达式 | 批处理脚本 | Centos教程 | Linux基础教程