How to Grab All Variables in a Post (Php)

Get all variables sent with POST?

The variable $_POST is automatically populated.

Try var_dump($_POST); to see the contents.

You can access individual values like this: echo $_POST["name"];

This, of course, assumes your form is using the typical form encoding (i.e. enctype=”multipart/form-data”

If your post data is in another format (e.g. JSON or XML, you can do something like this:

$post = file_get_contents('php://input');

and $post will contain the raw data.

Assuming you're using the standard $_POST variable, you can test if a checkbox is checked like this:

if(isset($_POST['myCheckbox']) && $_POST['myCheckbox'] == 'Yes')
{
     ...
}

If you have an array of checkboxes (e.g.

<form action="myscript.php" method="post">
  <input type="checkbox" name="myCheckbox[]" value="A" />val1<br />
  <input type="checkbox" name="myCheckbox[]" value="B" />val2<br />
  <input type="checkbox" name="myCheckbox[]" value="C" />val3<br />
  <input type="checkbox" name="myCheckbox[]" value="D" />val4<br />
  <input type="checkbox" name="myCheckbox[]" value="E" />val5
  <input type="submit" name="Submit" value="Submit" />
</form>

Using [ ] in the checkbox name indicates that the selected values will be accessed by PHP script as an array. In this case $_POST['myCheckbox'] won't return a single string but will return an array consisting of all the values of the checkboxes that were checked.

For instance, if I checked all the boxes, $_POST['myCheckbox'] would be an array consisting of: {A, B, C, D, E}. Here's an example of how to retrieve the array of values and display them:

  $myboxes = $_POST['myCheckbox'];
  if(empty($myboxes))
  {
    echo("You didn't select any boxes.");
  }
  else
  {
    $i = count($myboxes);
    echo("You selected $i box(es): <br>");
    for($j = 0; $j < $i; $j++)
    {
      echo $myboxes[$j] . "<br>";
    }
  }

How to grab all variables in a post (PHP)

If you really just want to print them, you could do something like:

print_r($_POST);

Alternatively, you could interact with them individually doing something like:

foreach ($_POST as $key => $value) {
    //do something
    echo $key . ' has the value of ' . $value;
}

but whatever you do.. please filter the input. SQL Injection gives everyone sleepless nights.

PHP: Possible to automatically get all POSTed data?

Sure. Just walk through the $_POST array:

foreach ($_POST as $key => $value) {
    echo "Field ".htmlspecialchars($key)." is ".htmlspecialchars($value)."<br>";
}

PHP - Capture All POST Variables

For a PayPal IPN, you should be able to use $postdata = file_get_contents('php://input'); to fetch the raw post data needed for the validation callback.

Get all $_POST variables starting with certain text

The following uses strpos() to check that the POST string begins with book_

foreach($_POST as $key => $value) {
    if (strpos($key, 'book_') === 0) {
        // value starts with book_
    }
}

How do I print all POST results when a form is submitted?

All the values are stored in the $_POST collection

<?php print_r($_POST); ?>

or if you want something fancier that is easier to read use a foreach loop to loop through the $_POST collection and print the values.

<table>
<?php 

    foreach ($_POST as $key => $value) {
        echo "<tr>";
        echo "<td>";
        echo $key;
        echo "</td>";
        echo "<td>";
        echo $value;
        echo "</td>";
        echo "</tr>";
    }

?>
</table>

How can I grab and store multiple $_POST Variables in a for each loop?

foreach ($_POST as $i => $v) {
  if (preg_match("/^Q\d+$/",$i)) {
    // Here we insert value $v to database
  }
}

Is there a PHP function to call all variables from a form?

You can loop over all veriables in the $_PREQUEST array:

foreach($_REQUEST as $key=>$value){
  //doStuff
}

However this will include all send parameters, not only the input. Also you should not use $_REQUEST but $_POST or $_GET

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