$_post用法一例

[Navarre]

<?php
print_r($_POST);
?>

<form actiion="demo.php" method="post">
username: <input type="text" name="uname"><br>
password: <input type="password" name="pass"><br>
<input type="submit" value="login">
</form>




<?php
//print_r($_POST);
foreach($_POST as $key=>$val){
echo $key."==>".$val."<br>";
}
?>

<form actiion="demo.php" method="post">
username: <input type="text" name="username"><br>
password: <input type="password" name="password"><br>
<input type="submit" value="login">
</form>