如何将变量添加到按钮的值？

Question

如何将$num变量值添加到按钮的值？

<?PHP
$num = "3";
    echo '<input id="loadmore" type="button" value="$num" style=" margin-top: 20px; " > <input id="pages" type="hidden" value="$num">';
?>

Answer 1

保持简单,使用.(点)来连接变量,

echo '<input id="loadmore" type="button" value="'. $num .'" style=" margin-top: 20px; " > <input id="pages" type="hidden" value="'. $num .'">';

还看看heredoc,

echo <<<EOT
<input id="loadmore" type="button" value="$num" style=" margin-top: 20px; " > <input id="pages" type="hidden" value="$num">
EOT;

演示.