Add a new datetime constant for RFC7231

Author: duncan3dc

ext/date/php_date.c

@@ -764,6 +764,11 @@ PHP_RSHUTDOWN_FUNCTION(date)
  */
 #define DATE_FORMAT_RFC1123  "D, d M Y H:i:s O"
 
+/*
+ * RFC7231, Section 7.1.1: http://tools.ietf.org/html/rfc7231
+ */
+#define DATE_FORMAT_RFC7231  "D, d M Y H:i:s \\G\\M\\T"
+
 /*
  * RFC2822, Section 3.3: http://www.ietf.org/rfc/rfc2822.txt
  *  FWS             =       ([*WSP CRLF] 1*WSP) /   ; Folding white space
@@ -857,6 +862,7 @@ PHP_MINIT_FUNCTION(date)
 	REGISTER_STRING_CONSTANT("DATE_RFC850",  DATE_FORMAT_RFC850,  CONST_CS | CONST_PERSISTENT);
 	REGISTER_STRING_CONSTANT("DATE_RFC1036", DATE_FORMAT_RFC1036, CONST_CS | CONST_PERSISTENT);
 	REGISTER_STRING_CONSTANT("DATE_RFC1123", DATE_FORMAT_RFC1123, CONST_CS | CONST_PERSISTENT);
+	REGISTER_STRING_CONSTANT("DATE_RFC7231", DATE_FORMAT_RFC7231, CONST_CS | CONST_PERSISTENT);
 	REGISTER_STRING_CONSTANT("DATE_RFC2822", DATE_FORMAT_RFC2822, CONST_CS | CONST_PERSISTENT);
 	REGISTER_STRING_CONSTANT("DATE_RFC3339", DATE_FORMAT_RFC3339, CONST_CS | CONST_PERSISTENT);
 	REGISTER_STRING_CONSTANT("DATE_RFC3339_EXTENDED", DATE_FORMAT_RFC3339_EXTENDED, CONST_CS | CONST_PERSISTENT);
@@ -2050,6 +2056,7 @@ static void date_register_classes(void) /* {{{ */
 	REGISTER_DATE_CLASS_CONST_STRING("RFC850",           DATE_FORMAT_RFC850);
 	REGISTER_DATE_CLASS_CONST_STRING("RFC1036",          DATE_FORMAT_RFC1036);
 	REGISTER_DATE_CLASS_CONST_STRING("RFC1123",          DATE_FORMAT_RFC1123);
+	REGISTER_DATE_CLASS_CONST_STRING("RFC7231",          DATE_FORMAT_RFC7231);
 	REGISTER_DATE_CLASS_CONST_STRING("RFC2822",          DATE_FORMAT_RFC2822);
 	REGISTER_DATE_CLASS_CONST_STRING("RFC3339",          DATE_FORMAT_RFC3339);
 	REGISTER_DATE_CLASS_CONST_STRING("RFC3339_EXTENDED", DATE_FORMAT_RFC3339_EXTENDED);