How to get the name list of $_POST vars ?

fabiuz

Is it possible to know which are tha variables sent by a form without knowing their names?

I have made a form with a submit button for each db record so that it could be possible to modify any single row.
Each record has a submit button with a different name like:

submit1
submit2
submit3

what I need now is "detect" which was the clicked submit button to be able to update such record only.

Is it possible?

Thanks a lot!

cheerio

<input type="submit" name="submit1">
<input type="submit" name="submit2">
<input type="submit" name="submit2">

if($_POST['submit1'])
{
  //If they clicked submit 1
}
elseif($_POST['submit2'])
{
  //If they clicked submit 2
}
elseif($_POST['submit3'])
{
 //If they clicked submit 3
}

Targash

There are other option, you can give the same name to all submits and diferent value and make a switch sentence by know what you have to do.
Example:

<input type='submit' name='submit' value='value1'>
<input type='submit' name='submit' value='value2'>
<input type='submit' name='submit' value='value3'>

<?
switch ($_POST['submit']) {
case 'value1':
sentences;
break;
case 'value2':
sentences;
break;
case 'value3':
sentences;
break;
}
?>

ednark

you can also pass in your submit as an array and then ignore the string value of the buttons. It may look cleaner this way.

<?php

print"<pre>";print_r($_POST);print"</pre>";

$array_keys = array_keys($_POST['submit']);
$action = $array_keys[0];

switch ( $action ) {  

  case 'goforward':
    echo "GO FORWARD";
    break;
  case 'goback':
    echo "GO BACK";
    break;
  default: 
    echo "NO ACTION";
    break;
}

?>
<form method="post">
<input type="submit" name="submit[goforward]" value="NEXT" />
<br />
<input type="submit" name="submit[goback]" value="LAST" />
</form>

jazz_snob

If you intend to have submit only ever update a single row, then why not make each row a separate form?

That would be my approach.