What does the "modulo" function do in PHP and how can it be used for alternating row colors?

The "modulo" function in PHP returns the remainder of a division operation. It can be used to alternate row colors in a table by checking if the row number is even or odd. By using the modulo operator (%) with a value of 2, we can determine if a row is even or odd and apply different styles accordingly. 

<?php
$colors = array('even' => 'lightgrey', 'odd' => 'white');
$row_count = 10; // Number of rows in the table

for ($i = 1; $i <= $row_count; $i++) {
    $row_color = ($i % 2 == 0) ? $colors['even'] : $colors['odd'];
    echo '<tr style="background-color: ' . $row_color . ';">';
    // Output table row content here
    echo '</tr>';
}
?>

Keywords

modulo function PHP alternating row colors usage

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