FILTER()¶

Synopsis¶

Filter the string to include only the allowed characters

Description¶

Permits all characters listed in allowed-chars, filtering all others outs. In addition to literally listing the characters, you may also use ranges of characters (delimited by a '-'

Hexadecimal characters started with a '\x'(i.e. \x20)

Octal characters started with a '\0' (i.e. \040)

Also '\t','\n' and '\r' are recognized.

Note

If you want the '-' character it needs to be prefixed with a '\'

Syntax¶

FILTER(allowed-chars,string)

Arguments¶

allowed-chars
string

Generated Version¶

This documentation was generated from Asterisk branch 21 using version GIT