字符串 | String 目录 addcslashes addslashes bin2hex chop chr chunk_split convert_cyr_string convert_uudecode convert_uuencode count_chars crc32 crypt ctype_alnum ctype_alpha ctype_cntrl ctype_digit ctype_graph ctype_lower ctype_print ctype_punct ctype_upper ctype_xdigit echo ereg eregi eregi_replace ereg_replace explode fprintf get_html_translation_table hebrev hebrevc hex2bin htmlentities htmlspecialchars htmlspecialchars_decode html_entity_decode implode is_tainted join lcfirst levenshtein localeconv ltrim md5 md5_file metaphone money_format nl2br nl_langinfo number_format ord parse_str preg_filter preg_grep preg_last_error preg_match preg_match_all preg_quote preg_replace preg_replace_callback preg_replace_callback_array preg_split print printf quoted_printable_decode quoted_printable_encode rtrim setlocale sha1 sha1_file similar_text soundex split spliti sprintf sql_regcase sscanf strcasecmp strchr strcmp strcoll strcspn stripcslashes stripos stripslashes strip_tags stristr strlen strnatcasecmp strnatcmp strncasecmp strncmp strpbrk strpos strrchr strrev strripos strrpos strspn strstr strtok strtolower strtoupper strtr str_getcsv str_ireplace str_pad str_repeat str_replace str_rot13 str_shuffle str_split str_word_count substr substr_compare substr_count substr_replace taint trim ucfirst ucwords untaint vfprintf vprintf vsprintf wordwrap