?? fig16_03.pl
字號:
#!/usr/bin/perl
# Fig. 16.3: fig16_03.pl
# Use hidden form fields to keep track of data.
use warnings;
use strict;
use CGI qw( :standard );
my $data = param( "HIDDEN" );
my $name = param( "NAME" );
my $value = param( "VALUE" );
$data .= "$name ";
$data .= "$value ";
print( header() );
print( start_html( -title => 'Using Hidden Fields' ) );
print <<Form;
<form method = "post" action = "fig16_03.pl">
<strong>Please enter the fields name: </strong>
<input type = "TEXT" name = "NAME"><br>
<strong>Please enter the fields value: </strong>
<input type = "TEXT" name = "VALUE"><br>
<input type = "HIDDEN" name = "HIDDEN" value = "$data">
<input type = "SUBMIT" value = "enter your data">
</form>
Form
my %values = split( ' ', $data );
foreach ( keys( %values ) ) {
print( p( "$_: $values{ $_ }" ) );
}
print( end_html() );
###########################################################################
# (C) Copyright 2001 by Deitel & Associates, Inc. and Prentice Hall. #
# All Rights Reserved. #
# #
# DISCLAIMER: The authors and publisher of this book have used their #
# best efforts in preparing the book. These efforts include the #
# development, research, and testing of the theories and programs #
# to determine their effectiveness. The authors and publisher make #
# no warranty of any kind, expressed or implied, with regard to these #
# programs or to the documentation contained in these books. The authors #
# and publisher shall not be liable in any event for incidental or #
# consequential damages in connection with, or arising out of, the #
# furnishing, performance, or use of these programs. #
###########################################################################
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