Read CSV with PHP

csv2matrix.php

<?php
/**
 * Read character separated values file like CSV, TSV, etc.,
 * If $a_asocciative==true returns asocciative matrix using
 * the first row as column names.
 * 
 * Example: print_r(csv2matrix("ocr_result.tsv", "\t"));
 * 
 * @author Arturo E. Rosas Gutiérrez <https://github.com/AEROGU>
 * @license MIT
 *
 * @param string $a_filename
 * @param string $a_separtor
 * @param boolean $a_asocciative
 * @return array Matrix data
 */
function csv2matrix($a_filename, $a_separtor, $a_asocciative=true){
    $line = 0;
    $file = fopen($a_filename, "r"); //Open file for reading
    $matrix = array();
    $column_names = array();
    
    while (($row = fgetcsv($file, 0, $a_separtor)) == true) { // Ride rows
        $num_colums = count($row); // Columns number in current row

        if ($line == 0){
            for ($colum = 0; $colum < $num_colums; $colum++) {
                $column_names[$colum] = $row[$colum];
            }
        } else {
            //Ride colums
            for ($colum = 0; $colum < $num_colums; $colum++) {
                $matrix[$line][$a_asocciative ? $column_names[$colum] : $colum] = $row[$colum];
            }
        }

        $line++; // Current row number
    }
    //Cerramos el archivo
    fclose($file);
    return $matrix;
}