PHP

multiple submit button in php

<?php
    if (isset($_POST['publish'])) {
        # Publish-button was clicked
    }
    elseif (isset($_POST['save'])) {
        # Save-button was clicked
    }
?>

multiple submit button form to multiple php files

<script type="text/javascript">
  function submitForm(action) {
    var form = document.getElementById('form1');
    form.action = action;
    form.submit();
  }
</script>

...

<form id="form1">
  <!-- ... -->
  <input type="button" onclick="submitForm('page1.php')" value="submit 1" />
  <input type="button" onclick="submitForm('page2.php')" value="submit 2" />
</form>