Question

How to convert a specific column of a decimal matrix to a string in PHP

Answer 1

function convertColumnToString($matrix, $col) {
    $rows = count($matrix);
    $result = "";

    for ($i = 0; $i < $rows; $i++) {
        $result = $result . $matrix[$i][$col] . " ";
    }

    return trim($result);
}

$matrix = array(
        array( 4,  7,  9, 18, 29, 0),
        array( 1,  9, 18, 99,  4, 3),
        array( 9, 17, 89,  2,  7, 5),
        array(19, 49,  6,  1,  9, 8),
        array(29,  4,  7,  9, 18, 6)
    );

$col = 3;

$str = convertColumnToString($matrix, $col);

echo $str . "\n";

 
 
 
 
/*
run:
 
18 99 2 1 9
 
*/

 

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