dns_get_mx

Function • Params and return types changed in PHP 8.0

Alias of getmxrr.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
PHP 8.5
PHP 8.6

dns_get_mx Function synopsis

dns_get_mx(
    string $hostname,
    &$hosts,
    &$weights = null
  ): bool

Parameters

$hostname

Typestring

$hosts

Passed by reference

$weights

Passed by reference, OptionalDefault valuenull

Note that the parameters $hosts and $weights are passed by reference, and contain additional/updated context data that may be useful.

Return value

Typebool

Changes to the dns_get_mx Function

PHP 8.0

  • Return type added: bool
  • Parameter type added for parameter #1 ($hostname): string
  • Parameter name of parameter #2 changed: $mxhosts to $hosts
  • Parameter name of parameter #3 changed: $weight to $weights
  • Parameter default value added for position #3 ($weights): null
  dns_get_mx(
-     $hostname,
+     string $hostname,
-     &$mxhosts,
+     &$hosts,
-     &$weight
+     &$weights = null
-   )
+   ): bool

dns_get_mx Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes