Filter
Purpose
Returns from textToFilter only those characters specified in filterText, in the order they were originally entered in textToFilter.
Format
Filter(textToFilter;filterText)
Parameters
textToFilter - any
text expression or text
field filterText - the characters to preserve in the specified text
Data type returned
text
Originated in
FileMaker Pro 7.0
Description
If filterText doesn’t have any characters, an empty string is returned. The Filter function is case sensitive.
Examples
Filter ( "(408)555-1212" ; "0123456789" ) returns 4085551212.
Filter ( "AaBb" ; "AB" ) returns AB.
The following example removes all text from the provided data, then formats the remaining numbers in the preferred phone number formatting:
Let ( phone = filter ( theField ; "0123456789" ) ; "(" & left ( phone ; 3 ) & ")" & middle ( phone ; 4 ; 3 ) & "-" & middle ( phone ; 7 ; 4 ) )
If theField contains Work: 408.555.1212 this calculation returns (408)555-1212.
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