php: how to change string data become numeric data

Question

can you tell how to change this result in php and mysql script:

  Model                  Class
Ball                        S
Book                        A
Spoon
         


        

Answer 1

Your question is a little unclear, but I'm assuming you have the input data in an array mapping name to defect, and you want for each row a 1 in the appropriate column and a zero everywhere else. If so, it's just this:

$arr = array('blue' => 'S', 'red' => 'A', 'yellow' => null, 'green' => 'B', 'black' => 'C');

$defects = array_filter(array_unique(array_values($arr)));
echo "name\t";
echo implode("\t", $defects);
echo "\n";

foreach($arr as $name => $defect) {
    echo "$name";
    foreach($defects as $test) {
        echo "\t";
        echo $test == $defect ? 1 : 0;
    }
    echo "\n";
}