PHP偶数项和奇数项在两列之一，将第一项放在偶数列

<?php
$numbers = array(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
$evenColumn = array();
$oddColumn = array();

foreach ($numbers as $index => $number) {
    if ($index % 2 == 0) {
        $evenColumn[] = $number;
    } else {
        $oddColumn[] = $number;
    }
}

echo "<div style='float: left; width: 50%;'>";
foreach ($evenColumn as $number) {
    echo $number . "<br>";
}
echo "</div>";

echo "<div style='float: left; width: 50%;'>";
foreach ($oddColumn as $number) {
    echo $number . "<br>";
}
echo "</div>";
?>