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-rw-r--r--ext/date/php_date.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/date/php_date.c b/ext/date/php_date.c
index dfad240fb1..6e878063eb 100644
--- a/ext/date/php_date.c
+++ b/ext/date/php_date.c
@@ -4444,7 +4444,7 @@ PHP_FUNCTION(timezone_identifiers_list)
ZEND_PARSE_PARAMETERS_START(0, 2)
Z_PARAM_OPTIONAL
Z_PARAM_LONG(what)
- Z_PARAM_STRING_EX(option, option_len, 1, 0)
+ Z_PARAM_STRING_OR_NULL(option, option_len)
ZEND_PARSE_PARAMETERS_END();
/* Extra validation */