Display a two-dimensional array with two different nested loops in matrix form PHP?

In PHP, you can display a two-dimensional array in matrix form using nested loops − one loop for rows and another for columns. Use the tab character \t to create proper spacing between elements.

Syntax

for ($row = 0; $row < rows; $row++) {
    for ($col = 0; $col < columns; $col++) {
        echo $twoDimensionalArray[$row][$col], "\t";
    }
    echo "<br>"; // New line after each row
}

Example

Here's how to create and display a 3x3 matrix with nested loops ?

<?php
$twoDimensionalArray = [];
$value = 7;

// Fill the array
for ($row = 0; $row <= 2; $row++) {
    for ($col = 0; $col <= 2; $col++) {
        $twoDimensionalArray[$row][$col] = $value;
    }
}

// Display the array in matrix form
for ($row = 0; $row <= 2; $row++) {
    for ($col = 0; $col <= 2; $col++) {
        echo $twoDimensionalArray[$row][$col] . "\t";
    }
    echo "<br>";
}
?>

7	7	7	
7	7	7	
7	7	7	

Different Values Example

You can also create a matrix with different values for better visualization ?

<?php
$matrix = [
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9]
];

// Display using nested loops
for ($i = 0; $i < count($matrix); $i++) {
    for ($j = 0; $j < count($matrix[$i]); $j++) {
        echo $matrix[$i][$j] . "\t";
    }
    echo "<br>";
}
?>

1	2	3	
4	5	6	
7	8	9	

Conclusion

Using nested loops is the standard approach for displaying two-dimensional arrays in matrix form. The outer loop handles rows while the inner loop processes columns, with tab spacing for proper alignment.