Fixed bug #53037 (FILTER_FLAG_EMPTY_STRING_NULL is not implemented).

diff --git a/ext/filter/sanitizing_filters.c b/ext/filter/sanitizing_filters.c
index 7b7c5fe4ae7884ea5d06529c53ddc248d502875c..b0348dbef56b67f2beec638f22e01dd8f51055bc 100644 (file)
--- a/ext/filter/sanitizing_filters.c
+++ b/ext/filter/sanitizing_filters.c
@@ -205,7 +205,11 @@ void php_filter_string(PHP_INPUT_FILTER_PARAM_DECL)
 
        if (new_len == 0) {
                zval_dtor(value);
-               ZVAL_EMPTY_STRING(value);
+               if (flags & FILTER_FLAG_EMPTY_STRING_NULL) {
+                       ZVAL_NULL(value);
+               } else {
+                       ZVAL_EMPTY_STRING(value);                       
+               }
                return;
        }
 }
@@ -280,6 +284,9 @@ void php_filter_unsafe_raw(PHP_INPUT_FILTER_PARAM_DECL)
                }
 
                php_filter_encode_html(value, enc);     
+       } else if (flags & FILTER_FLAG_EMPTY_STRING_NULL && Z_STRLEN_P(value) == 0) {
+               zval_dtor(value);
+               ZVAL_NULL(value);
        }
 }
 /* }}} */

diff --git a/ext/filter/tests/bug53037.phpt b/ext/filter/tests/bug53037.phpt
new file mode 100644 (file)
index 0000000..4a1e9e3
--- /dev/null
+++ b/ext/filter/tests/bug53037.phpt
@@ -0,0 +1,14 @@
+--TEST--
+Bug #53037 (FILTER_FLAG_EMPTY_STRING_NULL is not implemented)
+--SKIPIF--
+<?php if (!extension_loaded("filter")) die("skip"); ?>
+--FILE--
+<?php
+var_dump(
+       filter_var("", FILTER_DEFAULT),
+    filter_var("", FILTER_DEFAULT, array('flags' => FILTER_FLAG_EMPTY_STRING_NULL))
+);
+?>
+--EXPECT--     
+string(0) ""
+NULL