The compiler can figure this out

diff --git a/ext/standard/string.c b/ext/standard/string.c
index 14259cabc03938d392fa049d115765e75bfb1951..c7ed8844f10e8439afc190130b74f828c24285ed 100644 (file)
--- a/ext/standard/string.c
+++ b/ext/standard/string.c
@@ -2821,7 +2821,7 @@ static inline HASH php_strtr_hash(const char *str, int len)
        HASH    res = 0;
        int             i;
        for (i = 0; i < len; i++) {
-               res = (res << 5) + res + (unsigned char)str[i];
+               res = res * 33 + (unsigned char)str[i];
        }
 
        return res;