It's not legacy - it's binary.

diff --git a/Zend/zend.h b/Zend/zend.h
index 443fc2d8d9818c672a87441572752e8b42eb9190..bf5a37d88d3caa28b81196e25c2003ad7cacd33e 100644 (file)
--- a/Zend/zend.h
+++ b/Zend/zend.h
@@ -313,7 +313,7 @@ typedef struct _zend_object {
 typedef union _zvalue_value {
        long lval;                                      /* long value */
        double dval;                            /* double value */
-       struct {                    /* 8-bit legacy string type */
+       struct {                    /* 8-bit binary string type */
                char *val;
                int len;
        } str;