问题
Good Day!.
I need a kinda little help for PHP. I’m really really newbie for PHP and I already search it to google and can’t find any solution.
My Problem is:
I want to get the value of textbox1 then transfer it to another page where the value of textbox1 will be appeared in the textbox2.
Below is my codes for PHP:
<html>
<body>
<form name='form' method='post' action="testing2.php">
Name: <input type="text" name="name" id="name" ><br/>
<input type="submit" name="submit" value="Submit">
</form>
</body>
</html>
I also add the code below and the error is “Notice: Undefined index: name”
<?php
$name = $_GET['name'];
echo $name;
?>
or
<?php
$name = $_POST['name'];
echo $name;
?>
回答1:
Your method is post, so use $_POST
Also, try wrapping it around an isset function:
if (isset($_POST['name'])){
echo $_POST['name'];
}
This will also handle the undefined error
回答2:
This would be your textbox2:
<input type="text" name="textbox2" id="name" <?php echo (isset($_POST['name']) ? 'value=' .htmlspecialchars($_POST['name']). ' : ''); ?>/>
If you want to use the GET method, change post to get in your form and $_POST to $_GET in the php code of textbox2
来源：https://stackoverflow.com/questions/17014520/php-get-the-value-of-textbox-then-pass-it-to-a-variable