checkdnsrr

PHP 4, PHP 5, PHP 7, PHP 8
checkdnsrr - Check DNS records corresponding to a given Internet host name or IP address
Manual

checkdnsrr( string$hostname, [string$type = "MX"] ): bool

Searches DNS for records of type type corresponding to hostname.

Parameters

hostname

hostname 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.

Return Values

Returns true if any records are found; returns false if no records were found or if an error occurred.

Notes

Note:

For compatibility with Windows before this was implemented, then try the PEAR class Net_DNS.

Related Functions

  • dns_get_record - Fetch DNS Resource Records associated with a hostname
  • gethostbyaddr - Get the Internet host name corresponding to a given IP address
  • gethostbynamel - Get a list of IPv4 addresses corresponding to a given Internet host name
  • gethostbyname - Get the IPv4 address corresponding to a given Internet host name
  • getmxrr - Get MX records corresponding to a given Internet host name

Function checkdnsrr:

  • Manual

Network Functions

Most used PHP functions