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-rw-r--r--ext/standard/php_string.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/standard/php_string.h b/ext/standard/php_string.h
index d5d3e09f81..7c6b10638d 100644
--- a/ext/standard/php_string.h
+++ b/ext/standard/php_string.h
@@ -124,7 +124,7 @@ PHPAPI char *php_strtoupper(char *s, size_t len);
PHPAPI char *php_strtolower(char *s, size_t len);
PHPAPI zend_string *php_string_toupper(zend_string *s);
PHPAPI zend_string *php_string_tolower(zend_string *s);
-PHPAPI char *php_strtr(char *str, size_t len, char *str_from, char *str_to, size_t trlen);
+PHPAPI char *php_strtr(char *str, size_t len, const char *str_from, const char *str_to, size_t trlen);
PHPAPI zend_string *php_addslashes(zend_string *str, int should_free);
PHPAPI zend_string *php_addcslashes(zend_string *str, int freeit, char *what, size_t what_len);
PHPAPI void php_stripslashes(zend_string *str);