Error when using Spreadsheet::ParseExcel - excel

Question

I get 2 errors when compiling the following code:
#!/usr/bin/perl
use strict;
use warnings;
use Spreadsheet::ParseExcel;
my $xlsparser = Spreadsheet::ParseExcel->new();
my $xlsbook = $parser->parse('xsl_test.xls');
my $xls = $xls->worksheet(0);
my ( $row_first, $row_last ) = $xls->row_range();
my ( $col_first, $col_last ) = $xls->col_range();
my $csv = '';
for my $row ( $row_first .. $row_last ) { #Step through each row
for my $col ( $col_first .. $col_last ) { #Step through each column
my $cell = $xls->get_cell( $row, $col ); #Get the current cell
next unless $cell;
$csv .= $cell->unformatted(); #Get the cell's raw data -- no border colors or anything like that
if ( $col == $col_last ) {
$csv .= "\n"; #Make a new line at the end of the row
} else {
$csv .= ",";
}
}
}
Errors:
global symbol "$parser" requires explicit package name at line 8
global symbol "$xls" requires explicit package name at line 9
I get the above code from http://www.ehow.com/how_7352636_convert-xls-csv-perl.html, and installed the excel module using: cpan Spreadsheet::ParseExcel Spreadsheet::XLSX Spreadsheet::Read
What's causing the error?

Answer 1

Those errors mean that you are using strict, but you didn't declare some variables with my. For example, you declared $xmlprser, but then you tried to use $parser, which was not declared. The code you copied has errors.
A better place to get code is the source itself: Spreadsheet::ParseExcel
Try:
my $parser = Spreadsheet::ParseExcel->new();
my $xlsbook = $parser->parse('xsl_test.xls');
my $xls = $xlsbook->worksheet(0);