checkdnsrr

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

Syntax

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

Parameters

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.

Return

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

Examples

1 · host

<?

$host = "osbo.com";

$return = checkdnsrr($host);

var_export($return);

?>
true

2 · type

<?

$host = "osbo.com";
$type = "A";

$return = checkdnsrr($host, $type);

var_export($return);

?>
true

closelog

dns_check_record

dns_get_mx

dns_get_record

fsockopen

gethostbyaddr

gethostbyname

gethostbynamel

gethostname

getmxrr

getprotobyname

getprotobynumber

getservbyname

getservbyport

header

header_register_callback

header_remove

headers_list

headers_sent

http_response_code

inet_ntop

inet_pton

ip2long

long2ip

openlog

pfsockopen

setcookie

setrawcookie

socket_get_status

socket_set_blocking

socket_set_timeout

syslog

PHP

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