gistfile1.diff

diff --git a/ext/json/json.c b/ext/json/json.c
index fc1fcb7..853611e 100644
--- a/ext/json/json.c
+++ b/ext/json/json.c
@@ -96,6 +96,7 @@ static PHP_MINIT_FUNCTION(json)
 	REGISTER_LONG_CONSTANT("JSON_UNESCAPED_SLASHES", PHP_JSON_UNESCAPED_SLASHES, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("JSON_PRETTY_PRINT", PHP_JSON_PRETTY_PRINT, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("JSON_UNESCAPED_UNICODE", PHP_JSON_UNESCAPED_UNICODE, CONST_CS | CONST_PERSISTENT);
+	REGISTER_LONG_CONSTANT("JSON_PARTIAL_OUTPUT_ON_ERROR", PHP_JSON_PARTIAL_OUTPUT_ON_ERROR, CONST_CS | CONST_PERSISTENT);
 
 	REGISTER_LONG_CONSTANT("JSON_ERROR_NONE", PHP_JSON_ERROR_NONE, CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("JSON_ERROR_DEPTH", PHP_JSON_ERROR_DEPTH, CONST_CS | CONST_PERSISTENT);
@@ -389,9 +390,7 @@ static void json_escape_string(smart_str *buf, char *s, int len, int options TSR
 		}
 		if (ulen < 0) {
 			JSON_G(error_code) = PHP_JSON_ERROR_UTF8;
-			if (!PG(display_errors)) {
-				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid UTF-8 sequence in argument");
-			}
+			php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid UTF-8 sequence in argument");
 			smart_str_appendl(buf, "null", 4);
 		} else {
 			smart_str_appendl(buf, "\"\"", 2);
@@ -689,7 +688,11 @@ static PHP_FUNCTION(json_encode)
 
 	php_json_encode(&buf, parameter, options TSRMLS_CC);
 
-	ZVAL_STRINGL(return_value, buf.c, buf.len, 1);
+	if (JSON_G(error_code) != PHP_JSON_ERROR_NONE && options ^ PHP_JSON_PARTIAL_OUTPUT_ON_ERROR) {
+		ZVAL_FALSE(return_value);
+	} else {
+		ZVAL_STRINGL(return_value, buf.c, buf.len, 1);
+	}
 
 	smart_str_free(&buf);
 }
diff --git a/ext/json/php_json.h b/ext/json/php_json.h
index ef3e4b5..20426c0 100644
--- a/ext/json/php_json.h
+++ b/ext/json/php_json.h
@@ -63,6 +63,7 @@ extern zend_class_entry *php_json_serializable_ce;
 #define PHP_JSON_UNESCAPED_SLASHES	(1<<6)
 #define PHP_JSON_PRETTY_PRINT	(1<<7)
 #define PHP_JSON_UNESCAPED_UNICODE	(1<<8)
+#define PHP_JSON_PARTIAL_OUTPUT_ON_ERROR	(1<<9)
 
 /* Internal flags */
 #define PHP_JSON_OUTPUT_ARRAY	0