String Manipulation

_Asc(char): Gets the ASCII code of a single character.

_Chr(n): Returns the character corresponding to the given ASCII code.

_Instr(string, substring): Finds the position of a substring within a string (search is left to right).

_InstrRev(string, substring): Similar to _Instr, but searches from right to left.

_Lcase(string): Converts a string to lowercase.

_Left(string, n): Extracts the first n characters from the left side of a string.

_Len(string): Gets the length of a string.

_Ltrim(string): Removes whitespace from the left side of a string.

_Mid(string, start, n): Extracts n characters starting from a specified position within a string.

_Right(string, n): Extracts the last n characters from the right side of a string.

_Rtrim(string): Removes whitespace from the right side of a string.

_Space(n): Creates a string consisting of n spaces.

_StrReverse(string): Reverses the order of characters in a string.

_String(string, n): Creates a string consisting of a single character repeated n times.

_Trim(string): Removes whitespace from both the left and right sides of a string.

_Ucase(string): Converts a string to uppercase.

Data Formatting

_DateToString(datetime): Converts a datetime object into a formatted string representation.

_DollarToString(number): Converts a number to its text representation in dollars and cents.

_NumToString(number): Converts a number to its basic string representation (e.g., "123")

_NumToStringTH(number): Converts a number to its ordinal string representation (e.g., "123rd")

_NumToString_SP(number): Converts a number to its Spanish string representation.

_RandomCod(): Generates a random code (the specific format is unclear without more context).

Security and Web Encoding

_Check_Invalid_Html(string): Checks if a string contains HTML tags outside of an allowed list, likely to help prevent cross-site scripting (XSS) vulnerabilities.

_CleanQuery(string): Seems designed to sanitize a string to prevent SQL injection attacks.

_CleanValue(string): Removes content between <script> tags, another XSS prevention measure.

_Replace_Html_Entities(string): Replaces reserved HTML characters with their entity equivalents for safe display in web pages.

_Url_Decode(string): Decodes URL-encoded strings (replaces %xx sequences with characters).

_Url_Encode(string): Encodes special characters into URL-safe format.

Array Manipulation

_Explode(Data_to_Explode, Separator_Char, Name_of_Array_to_Create): Splits a string into an array based on a separator character.

_Explode_Trim(...): Similar to _Explode, but also trims whitespace from the resulting array elements.

Miscellaneous

_HtmlResult(): Likely gets the current HTML output generated by the script.

_InstrResult(substring): Seems to search for a substring within the current HTML output.

_IsBadEmailFormat(string): Performs basic validation of an email address format.