php_similar_char 3237 ext/standard/string.c sum += php_similar_char(txt1, pos1, php_similar_char 3241 ext/standard/string.c sum += php_similar_char(txt1 + pos1 + max, len1 - pos1 - max, php_similar_char 3276 ext/standard/string.c sim = php_similar_char(t1, t1_len, t2, t2_len);