(Perl) CSV Column Names

Demonstrates how to access CSV column names.

The Chilkat CSV library/component/class is freeware. The downloads for .NET, C++, Perl, Java, Ruby, and Python contain all of the Chilkat classes, some of which are freeware and some of which require licensing.

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use chilkat();

# This example program loads a file (sample.csv)
# that contains this content:
# 
# year,color,country,food
# 2001,red,France,cheese
# 2005,blue,"United States",hamburger
# 2008,green,Italy,pasta
# 1998,orange,Japan,sushi
# 
# The first row contains the column names.
# This file is available at:
# http://www.chilkatsoft.com/testData/sample.csv

$csv = chilkat::CkCsv->new();

# Prior to loading the CSV file, indicate that the 1st row
# should be treated as column names:
$csv->put_HasColumnNames(1);

# Load the CSV records from the file:

$success = $csv->LoadFile("sample.csv");
if ($success != 1) {
    print $csv->lastErrorText() . "\r\n";
    exit;
}

# Display the column names:

for ($i = 0; $i <= $csv->get_NumColumns() - 1; $i++) {
    $colName = $csv->getColumnName($i);
    print $i . ": " . $colName . "\r\n";

    # The following line demonstrates to to get the column
    # index given a column name:
    $idx = $csv->GetIndex($colName);
    print $colName . " is at column index " . $idx . "\r\n";
}