[RESOLVED] Arrays instead of the list of variables

Ali_baba

Hi,

How can I use an array instead of the list of say 20 variables of the same datatype.

Say here is the data entry page:

$variable1 = $_POST["variable1"];
$variable2 = $_POST["variable2"];
.....
$variable20 = $_POST["variable20"];

<form name= "entry" method="post"  action="entrydone.php">
<input type="text" name="variable1" value="<?echo $variable1?>" />
.....
<input type="text" name="variable20" value="<?echo $variable20?>" />
<inupt type="submit" value="continue">

The reason of using variablex= $_POST["variablex"]; is what if user presses back button (not the browser back button) to come back to this page.

and here is to display the data which was entered in text fields of the previous page:

$variable1 = $_POST["variable1"];
$variable2 = $_POST["variable2"];
......
$variable20 = $_POST["variable20"];

echo $variable1;
echo $variable5;
echo $variable20;
echo $variable15;

Thanks in advance 🙂

leatherback

$valids = array(
'var1'=>'',
'var2'=>'',
'varN'=>'');

foreach($valids as $key, $val)
  {
  if(array_key_exists($_POST, $key))
    {
    $valids[$key] = $_POST[$key];
    }
  }

for instance

bradgrafelman

Or you could instead do:

<input type="text" name="variable[]" value="<?echo $variable[0]?>" />
<input type="text" name="variable[]" value="<?echo $variable[1]?>" /> 
<input type="text" name="variable[]" value="<?echo $variable[2]?>" />

or even simpler,

for($i = 0; $i <= 20; $i++)
    echo '<input type="text" name="variable[]" value="' . $variable[$i] . "\" />\n";

$_POST['variable'] would then be an array of the submitted fields.

leatherback

bradgrafelman wrote:
Or you could instead do:
<input type="text" name="variable[]" value="<?echo $variable[0]?>" />
<input type="text" name="variable[]" value="<?echo $variable[1]?>" /> 
<input type="text" name="variable[]" value="<?echo $variable[2]?>" />
$_POST['variable'] would then be an array of the submitted fields.

very elegant indeed
{ :mad: why did I not suggest that }

Ali_baba

Thanks guys, I will try it when I will be back, and will resove the post marked if all goes well 🙂

NogDog

I'm not seeing anywhere here a reason to copy the values in $POST to either separate scalar variables or another array. Unless there is going to be some (at least possible) change to the values, why duplicate the data in a second location? You can prefill the form values from the $POST array as easily as from a scalar variable:

<input type="text" name="variable1" value="<?php
if(isset($_POST['variable1']) { echo htmlentities($_POST['variable1'], ENT_QUOTES); }
?>" size="20" maxlength="20">

Ali_baba

Thanks guys, it works...
I have another question but I will ask in seperate thread