PHP, HTML: Submit form automatically [closed]

Answer 1

Using pure javascript instead of jQuery :

<?php
    if (isset($_GET['var']))
{?>

<script type="text/javascript">
    document.getElementById('dateForm').submit(); // SUBMIT FORM
</script>

<?php 
}
else
{
  // leave the page alone
}
?>

Answer 2

I think you want this:

<?php
if (isset($_GET['var']))
{?>

<script type="text/javascript">
document.getElementById("formid").submit(); // Here formid is the id of your form
                           ^
</script>

<?php }
else
{
  // leave the page alone
}
?>