MFB Avoid zero-length keys which result in a spinning process

diff --git a/ext/standard/string.c b/ext/standard/string.c
index 26167f934c0a617384ffd6cd087e28b05f88d8c8..984a5fd7cd9e48110650a3fe66e698f21e9c5bfd 100644 (file)
--- a/ext/standard/string.c
+++ b/ext/standard/string.c
@@ -2256,6 +2256,9 @@ static void php_strtr_array(zval *return_value, char *str, int slen, HashTable *
                switch (zend_hash_get_current_key_ex(hash, &string_key, &string_key_len, &num_key, 0, &hpos)) {
                        case HASH_KEY_IS_STRING:
                                len = string_key_len-1;
+                               if (len < 1) {
+                                       RETURN_FALSE;
+                               }
                                if (len > maxlen) {
                                        maxlen = len;
                                }