Test

new_gist_file.php

<?php 
function is_right_format_col_1($val) {
    // var_dump($val);
    return is_numeric($val);
}

function is_right_format_col_2($val) {
    return ! preg_match('/[^A-Za-z\s]/', $val);
}

function is_right_format_col_3($val) {
    return in_array($val, array('trai', 'gai'));
}

function is_right_format_col_4($val){
    return is_numeric($val) && intval($val) > 0 && intval($val) < 200;
}

function is_right_format_col_5($val) {
    return is_numeric($val) && (strlen($val) == 4); //bo sung them dkien
}

$f = fopen('data.txt', 'r');
$first_line = true;
$total_column = 5;
echo '<table>';
while($line = trim(fgets($f))) {
    if ( $first_line ) {
        $line = substr($line, 3); //strip BOM characters
        $first_line = false;
    }
    $values = preg_split('/\s+/', $line);
    if ( ! empty( $values) ) {
        echo '<tr>';
        for($i = 1;$i <= $total_column;$i++) {
            $cval = current($values);
            if (call_user_func('is_right_format_col_' . $i, $cval)) {
                echo '<td>' . $cval . '</td>';
                next($values);
            } else {
                echo '<td></td>';
            }
            
        }
        echo '</tr>';
    }    
}
echo '</table>';