使用PHP将变量传递到第二页

问题描述：

I'm sorry to repeat this question, but the thing is that I have done everything and nothing works. My problem is that I'm trying to pass variables to a second page and it won't work.

Page 1:

<form method="post" name="form1" id="form1" enctype="multipart/form-data" action="editempresas3.php?name=<?php echo $name;?>&descr=<?php echo $descr;?>&dir=<?php echo $dir;?>&pais=<?php echo $pais;?>&tel=<?php echo $tel;?>&fax=<?php echo $fax;?>&email=<?php echo $email;?>&url=<?php echo $url;?>">

<?php 
$name = $_POST['empname'];
.....etc
          ?>

<input name="empname" type="text" required id="empname" form="form1">
.....etc
<input name="submit" type="submit" id="submit" form="form1" value="Crear">

Page 2:

The link will come without the variables http://www.sample.org/editempresas3.php?name=&descr=&dir=&pais=&tel=&fax=&email=&url=

答

you should use GET method to achieve this.

change

<form method="post" name="form1" id="form1" enctype="multipart/form-data" action="editempresas3.php">

<form method="GET" name="form1" id="form1" enctype="multipart/form-data" action="editempresas3.php">

P.S: if you're form is not uploading anything you can't even miss enctype="multipart/form-data"

答

Possibilities, from most to least desirable:

Use sessions:

Page 1

session_start();
$_SESSION['var_for_other_page'] = 'foo';

Page 2

session_start();
$myvar = $_SESSION['var_for_other_page']

Use hidden fields:

<form action="secondpage.php" method="post>
  <input type="hidden" name="var_for_other_page" value="foo" />
</form>

Put the get vars into the action URL:
```
<form action="secondpage.php?var_for_other_page=foo" method="post>
  <input ... />
</form>
```
In this case you will have variables in both $_POST and $_GET.

Do not use either 2 or 3 to pass sensitive information.

答

If you want to send data from a form to a new page, firstly I think your should always use POST. The reason it is not working is you are attempting to send form data via POST but in your action you are trying to build a GET using PHP variables echoed in the there.

e.g. action="editempresas3.php?name=<?php echo $name;?>&descr=<?php echo $descr;?>&dir=<?php echo $dir;?>&pais=<?php echo $pais;?>&tel=<?php echo $tel;?>&fax=<?php echo $fax;?>&email=<?php echo $email;?>&url=<?php echo $url;?>"

This can't work because PHP needs to process it before the HTML is rendered to print the variables you have chosen.

If you change your action to

action="editempresas3.php"

You will be successfully sent to the next page and if you then use

var_dump($_POST);

On your next page editempresas3.php you will get an output of all fields completed in the page 1 form.

使用PHP将变量传递到第二页

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