I am using a date picker in PHP, but I experience a small problem. When selecting a month, I automatically submit the form to change the amount of days:
<script>
function change()
{
document.getElementById("datepickerform").submit();
}
</script>
But, when I press submit, I also want to execute some extra code (querying a database for some info with the selected date. Is there a way to make a difference when the OK button is pressed or when the form is "submitted" via the function above?
Hereunder is the entire code (not finished, leap year also not included yet) of my datepicker.php:
<script>
function change(){
document.getElementById("datepickerform").submit();
}
</script>
<?php
// Include global Definitions and variables
// http://stackoverflow.com/questions/18179067/select-from-drop-down-menu-and-reload-page
// Form
define("FORM_DAY", "theday");
define("FORM_MONTH", "themonth");
define("FORM_YEAR", "theyear");
// Date related
$days = array(31,28,31,30,31,30,31,31,30,31,30,31);
// Get result from FORM POST
$submittedday = $_POST[FORM_DAY];
$submittedmonth = $_POST[FORM_MONTH];
$submittedyear = $_POST[FORM_YEAR];
if ($submittedday != '')
{
$currentday = $submittedday;
$currentmonth = $submittedmonth;
$currentyear = $submittedyear;
}
else
{
$currentday = intval(date("d"));
$currentmonth = intval(date("m"));
$currentyear = intval(date("Y"));
}
//DEBUG ON
echo $submittedday."/".$submittedmonth."/".$submittedyear."<br>\r\n";
echo $currentday."/".$currentmonth."/".$currentyear."<br>\r\n";
// DEBUG OFF
echo '<form id="datepickerform" action="' . $_SERVER['PHP_SELF'] . '" method="POST">';
echo '<table border="1" cellpadding="2">';
echo '<tr><td>';
echo '<table border="0" cellpadding="2">';
echo '<tr><th>Day</th><th>Month</th><th>Year</th></tr>';
echo '<tr>';
echo '<td><select name=' . FORM_DAY . '>';
$i = 1;
for ($i==1; $i<=$days[$currentmonth-1]; $i++)
{
echo '<option value="' . $i . '"';
if ($i == $currentday)
{
echo ' selected';
}
echo '>' . $i . '</option>';
}
echo '</select></td>';
echo '<td><select name=' . FORM_MONTH . ' onchange="change()">';
$i = 1;
for ($i==1; $i<=12; $i++)
{
echo '<option value="' . $i . '"';
if ($i == $currentmonth)
{
echo ' selected';
}
echo '>' . $i . '</option>';
}
echo '</select></td>';
echo '<td><select name=' . FORM_YEAR . '>';
$i = 2015;
for ($i==2015; $i<=2020; $i++)
{
echo '<option value="' . $i . '"';
if ($i == $currentyear)
{
echo ' selected';
}
echo '>' . $i . '</option>';
}
echo '</select></td>';
echo '</tr>';
echo '</table>';
echo '</td></tr>';
echo '<tr><td align="middle">';
echo '<input type="submit" value="OK"></td>';
echo '</td></tr>';
echo '</table>';
echo '</form>';
?>
Could anybody help?