Changeset 14381

Timestamp:

05/03/2010 06:54:37 PM (15 years ago)

Author:

nacin

Message:

Deprecate checkdnsrr from is_email. Unused in core, and wonky on some server setups (Mac OS X < PHP 5.3 specifically). A plugin can always add it back. props technosailor, fixes #12503.

File:

• trunk/wp-includes/formatting.php (modified) (2 diffs)

trunk/wp-includes/formatting.php

@@ -1466 +1466 @@
  *
  * @param string $email Email address to verify.
- * @param boolean $check_dns Whether to check the DNS for the domain using checkdnsrr().
+ * @param boolean $deprecated. Deprecated.
  * @return string|bool Either false or the valid email address.
  */
-function is_email( $email, $check_dns = false ) {
+function is_email( $email, $deprecated = false ) {
+    if ( ! empty( $deprecated ) )
+        _deprecated_argument( __FUNCTION__, '3.0' );
+
     // Test for the minimum length the email can be
     if ( strlen( $email ) < 3 ) {
@@ -1519 +1522 @@
             return apply_filters( 'is_email', false, $email, 'sub_invalid_chars' );
         }
-    }
-
-    // DNS
-    // Check the domain has a valid MX and A resource record
-    if ( $check_dns && function_exists( 'checkdnsrr' ) && !( checkdnsrr( $domain . '.', 'MX' ) || checkdnsrr( $domain . '.', 'A' ) ) ) {
-        return apply_filters( 'is_email', false, $email, 'dns_no_rr' );
     }