How to find difference between two date in php

$beginDate = date("Y-m-d");
$endDate = "2011-10-30";

echo daysDifference($endDate, $beginDate);

function daysDifference($endDate, $beginDate)
{

   //explode the date by "-" and storing to array
   $date_parts1=explode("-", $beginDate);
   $date_parts2=explode("-", $endDate);
   //gregoriantojd() Converts a Gregorian date to Julian Day Count
   $start_date=gregoriantojd($date_parts1[1], $date_parts1[2], $date_parts1[0]);
   $end_date=gregoriantojd($date_parts2[1], $date_parts2[2], $date_parts2[0]);
   return $end_date - $start_date;                     
}

How to Get the Current Page Name in php

<?php
function curPageName() {
 return substr($_SERVER["SCRIPT_NAME"],strrpos($_SERVER["SCRIPT_NAME"],"/")+1);
}

echo "The current page name is ".curPageName();
?>

How to Get the Current Page URL in PHP

<?php
function curPageURL() {
 $pageURL = 'http';
 if ($_SERVER["HTTPS"] == "on") {$pageURL .= "s";}
 $pageURL .= "://";
 if ($_SERVER["SERVER_PORT"] != "80") {
  $pageURL .= $_SERVER["SERVER_NAME"].":".$_SERVER["SERVER_PORT"].$_SERVER["REQUEST_URI"];
 } else {
  $pageURL .= $_SERVER["SERVER_NAME"].$_SERVER["REQUEST_URI"];
 }
 return $pageURL;
}
?>

<?php
  echo curPageURL();
?>

Submit Form without Refreshing Page with Jquery

Contact.html

<div id="preview"> </div>
<div id="formbox">
<form id="form" action="submit.php" method="post">
Name
<input type="text" name="name" />
Email
<input type="text" name="email" />
Message
<textarea name="message"></textarea>
<input type="submit" value="Submit">
</form>
</div>

Contacts

Table contains name, email, message and created data etc.

CREATE TABLE `contact` (
`id` int(11) AUTO_INCREMENT PRIMARY KEY,
`name` varchar(255) UNIQUE KEY,
`email` varchar(100),
`message` text UNIQUE KEY,
`created_date` int(11),
)

submit.php

Contails simple PHP code. Inserting values into contacts table.

<?php
include("db.php");
if($_SERVER["REQUEST_METHOD"] == "POST")
{
$name=mysql_real_escape_string($_POST['name']);
$email=mysql_real_escape_string($_POST['email']);
$message=mysql_real_escape_string($_POST['message']);
if(strlen($name)>0 && strlen($email)>0 && strlen($message)>0)
{
$time=time();
mysql_query("INSERT INTO contact (name,email,message,created_date) VALUES('$name','$email','$message','$time')");
echo "<h2>Thank You !</h2>";
}
}
?>

Validate Plugin

Here the collaboration of jQuery validate and form plug-in.

<script type="text/javascript" src="http://ajax.googleapis.com/
ajax/libs/jquery/1.5/jquery.min.js"></script>
<script type="text/javascript" src="jquery.form.js"></script>
<script type="text/javascript" src="jquery.validate.js"></script>
<script type="text/javascript">
$('document').ready(function()
{
$('#form').validate(
{
rules:
{
"name":{
required:true,
maxlength:40
},
"email":{
required:true,
email:true,
maxlength:100
},
"message":{
required:true
}},

messages:
{
"name":{
required:"This field is required"
},
"email":{
required:"This field is required",
email:"Please enter a valid email address"
},
"message":{
required:"This field is required"
}},

submitHandler: function(form){
$(form).ajaxSubmit({
target: '#preview',
success: function() {
$('#formbox').slideUp('fast');
}
});
}

})
});
</script>

db.php

PHP database configuration file

<?php
$mysql_hostname = "Host name";
$mysql_user = "UserName";
$mysql_password = "Password";
$mysql_database = "Database Name";
$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Could not connect database");
mysql_select_db($mysql_database, $bd) or die("Could not select database");
?>

Convert seconds to Hour:Minute:Second in php

<?php

$init = 685;
$hours = floor($init / 3600);
$minutes = floor(($init / 60) % 60);
$seconds = $init % 60;

echo "$hours:$minutes:$seconds";
?>

How to CONVERT seconds to minutes in php

<?
$seconds = "150";
$minutes = floor($seconds/60);
$secondsleft = $seconds%60;
if($minutes<10)
    $minutes = "0" . $minutes;
if($secondsleft<10)
    $secondsleft = "0" . $secondsleft;
echo "$minutes:$secondsleft minutes";
?>