php_similar_char 2904 ext/standard/string.c sum += php_similar_char(txt1, pos1, php_similar_char 2908 ext/standard/string.c sum += php_similar_char(txt1 + pos1 + max, len1 - pos1 - max, php_similar_char 2944 ext/standard/string.c sim = php_similar_char(Z_STRVAL_PP(t1), Z_STRLEN_PP(t1), Z_STRVAL_PP(t2), Z_STRLEN_PP(t2));