Question

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

Answer 1

function convertRowOfMatrixToString($matrix, $row) {
    $cols = count($matrix[0]);
    $result = "";
     
    for ($j = 0; $j < $cols; $j++) {
        $result = $result . $matrix[$row][$j] . " ";
    }
     
    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)
);
 
$row = 2;

$str = convertRowOfMatrixToString($matrix, $row);
 
echo $str;
 
 
 
 
/*
run:
 
9 17 89 2 7 5 
 
*/

 

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