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Text replacement / URL save text


MattPage
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Hi all,

I am trying to write a calculation to make a URL safe string from a field. By URL safe I mean only containing A-Z 0-9 _ and - .

I have a PHP script using regexp to do this on the web side but need to convert it to FM.

Requirements

-------------

Replace one or more spaces with a single "_"

Replace one or more & with "_and_"

Replace anything not A-Z 0-9 _ with "_" ([^_a-z0-9]+

I've been playing with the Substitute function but it appears I would have to do this individually for every character I dont want, and then check for double (triple, quad..) underscores.

Can anyone help with this.

Cheers

Matt

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