# try this
$page_template =~ s/\$(\w+)\$^\w/$input->param($1)/eg;
$page_template =~ s/\$(\w+)\$lc_/$input->param(lc($1))/eg;
$page_template =~ s/\$(\w+)\$uc_/$input->param(uc($1))/eg;

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Have a nice day
All decision is left to your taste

In reply to Re: Do regex using hash keys to wrapped template tokens by little
in thread Do regex using hash keys to wrapped template tokens by S_Shrum

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