Ticket #18927: 18927.diff

formatting.php

@@ -1540 +1540 @@
 function is_email( $email, $deprecated = false ) {
         if ( ! empty( $deprecated ) )
                 _deprecated_argument( __FUNCTION__, '3.0' );
+                
+        // Test for string
+        if ( !is_string( $email ) ) {
+                return apply_filters( 'is_email', false, $email, 'email_not_string' );
+        }               
 
         // Test for the minimum length the email can be
         if ( strlen( $email ) < 3 ) {