获取包含变量的$ _POST变量

Question

<?php

$var = "arbitrary";

echo <<<_END

<form method = "post" action = "feed.php">

    <input type = "text" name = "$var" />
    <input type = "submit" />

</form>

_END;

if (isset($_POST['$var']))
{
    echo $_POST['$var'];
}

?>

当我尝试从变量$ var中检索它时,我似乎无法获得此$ _POST数据.这可能吗？(从除了字符串之外的其他东西获取$ _POST)

Answer 1

$_POST['$var']应该是$_POST[$var]也不要将您的变量包装在单引号中