How set time in php to get data using date - php

Question

here is the script code of my page.
i select any date and i get the data by selecting date from the database.
i want to initially set the date to today when i open my page.
then i get the data of today and of current time.
but how ???
i give you an example: this is example link.
here you can see timestamp box to show results of current date and time
i want to do it exactly like this.
but how?
<link rel="stylesheet" type="text/css" href="tcal.css" />
<script type="text/javascript" src="tcal.js"></script>
<form action="index.php" method="get">
From : <input type="text" name="d1" class="tcal" value="" />
<input type="submit" value="Search">
</form>
<table id="resultTable" data-responsive="table" style="text-align: left; width: 400px;" border="1" cellspacing="0" cellpadding="4">
<thead>
<tr>
<th> Birtday </th>
<th> Name </th>
<th> Gender </th>
</tr>
</thead>
<tbody>
<?php
include('connect.php');
if (isset($_GET["d1"])) { $d1 = $_GET["d1"]; } else { $d1="0000-00-00"; };
$result = $db->prepare("SELECT * FROM birthday WHERE date = :a");
$result->bindParam(':a', $d1);
$result->execute();
for($i=0; $row = $result->fetch(); $i++){
?>
<tr class="record">
<td><?php echo $row['date']; ?></td>
<td><?php echo $row['name']; ?></td>
<td><?php echo $row['gender']; ?></td>
</tr>
<?php
}
?>
</tbody>
</table>

Answer 1

replace
if (isset($_GET["d1"])) { $d1 = $_GET["d1"]; } else { $d1="0000-00-00"; };
with
if (isset($_GET["d1"])) { $d1 = $_GET["d1"]; } else { $d1=date('"Y-m-d"); };
or even shorter
$d1 = isset($_GET["d1"]) ? $_GET["d1"] : date('"Y-m-d");
to set the current date as the initial date.
Your other question is "How do i get a calendar to select a date" right? If so, just google "How do i get a calendar to select a date with php". Or search for PHP Calendar select.
This is not a free "write my code for me" website by the way. Sorry.

Answer 2

To get current time and date, you can use the date function. For example:
$d1 = date('Y-m-d H:i:s');
It will give you something like:
"2014-03-14 08:52:30"