Fixed preg_replace_callback() with callback defined by array

ext/pcre/php_pcre.c

@@ -1422,7 +1422,9 @@ static void preg_replace_impl(INTERNAL_FUNCTION_PARAMETERS, zend_bool is_callabl
 	}
 
 	if (is_callable_replace) {
-		convert_to_text(replace);
+		if (Z_TYPE_P(replace) != IS_ARRAY) {
+			convert_to_text(replace);
+		}
 		if (!zend_is_callable(replace, 0, &callback_name)) {
 			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Requires argument 2, '%R', to be a valid callback", Z_TYPE(callback_name), Z_UNIVAL(callback_name));
 			zval_dtor(&callback_name);

ext/pcre/tests/bug21732.phpt

@@ -27,3 +27,16 @@ array(4) {
   string(1) "e"
 }
 string(4) "yes!"
+--UEXPECT--
+bool(false)
+array(4) {
+  [0]=>
+  unicode(5) "abcde"
+  [1]=>
+  unicode(2) "ab"
+  [2]=>
+  unicode(2) "cd"
+  [3]=>
+  unicode(1) "e"
+}
+unicode(4) "yes!"