s.check_valid_email
s.check_valid_url
s.cookie_delete
s.cookie_set
s.echo
s.file_add
s.file_copy
s.file_create
s.file_delete
s.file_exists
s.file_read
s.file_rename
s.file_size
s.file_write
s.folder_content
s.folder_create
s.folder_delete
s.folder_exists
s.folder_rename
s.format_phonenumber
s.header
s.http_request_get
s.include
s.json_decode
s.json_encode
s.mysql_close
s.mysql_connect
s.mysql_delete
s.mysql_insert
s.mysql_lastid
s.mysql_select
s.mysql_update
s.number_ordinal
s.number_round
s.password_hash
s.password_verify
s.percent
s.ping
s.random_string
s.run
s.session
s.storage_get
s.storage_set
s.string_clean
s.string_invert
s.string_length
s.string_lowercase
s.string_repeat
s.string_replace
s.string_trim
s.string_uppercase
s.string_url_decode
s.string_url_encode
s.string_username
s.string_word_count
s.string_word_uppercase
s.template
s.timestamp_unix
s.timestamp
