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-rw-r--r--ext/spl/spl_array.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/spl/spl_array.c b/ext/spl/spl_array.c
index 20a9d9e3da..76e9fbae2b 100644
--- a/ext/spl/spl_array.c
+++ b/ext/spl/spl_array.c
@@ -365,7 +365,7 @@ num_index:
zend_error(E_WARNING, "Undefined array key " ZEND_LONG_FMT, index);
case BP_VAR_W: {
zval value;
- ZVAL_UNDEF(&value);
+ ZVAL_NULL(&value);
retval = zend_hash_index_update(ht, index, &value);
}
}