New year Count Down in PHP

Happy New Year 2013 simple Count Down script in php

<?php
/* 
Online PHP Examples with Source Code
website: http://4evertutorials.blogspot.in/
*/

$day = 1;
$month = 1;
$year = 2013; //change for next year
$end = mktime(0,0,0,$month,$day,$year);
$today= mktime(date("G"),date("i"),
date("s"),date("m"),date("d"),date("Y"));
$days=($end-$today)/86400;
if ($days>0) {
$r1 = explode('.',$days);
$hours=24*($days-$r1[0]);
$r2 = explode('.',$hours);
$minutes=60*($hours-$r2[0]);
$r3 = explode('.',$minutes);
$seconds=60*($minutes-$r3[0]);
$r4 = explode('.',$seconds);
echo 'Days left: ' .$r1[0];
echo '
Time left: ' . $r2[0] . ':' . $r3[0] . ':' . $r4[0];
} else {
echo "Happy new year 2013:)";}


?>

By: 4evertutorials On 12/28/2012

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Website page rank php

Get the page rank of any website supported by Alexa with this simple function.

<?php
/* 
Online PHP Examples with Source Code
website: http://4evertutorials.blogspot.in/
*/


function page_rank($page, $type = 'alexa'){
switch($type){
case 'alexa':
$url = 'http://alexa.com/siteinfo/';
$handle = fopen($url.$page, 'r');
break;
case 'google':
$url = 'http://google.com/search?client=navclient-auto&ch=6-1484155081&features=Rank&q=info:';
$handle = fopen($url.'http://'.$page, 'r');
break;
}
$content = stream_get_contents($handle);
fclose($handle);
$content = preg_replace("~(\n|\t|\s\s+)~",'', $content);
switch($type){
case 'alexa':
if(preg_match('~\<div class=\"data (down|up)\"\>\<img.+?\>(.+?)\<\/div\>~im',$content,$matches)){
return $matches[2];
}else{
return FALSE;
}
break;
case 'google':
$rank = explode(':',$content);
if($rank[2] != '')
return $rank[2];
else
return FALSE;
break;
default:
return FALSE;
break;
}
}
// Alexa Page Rank:
echo 'Alexa Rank: '.page_rank('4evertutorials.blogspot.in');
echo '
';
// Google Page Rank
echo 'Google Rank: '.page_rank('4evertutorials.blogspot.in', 'google');


?>

By: 4evertutorials On 12/24/2012

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Preventing SQL Injections and Cross-Site Scripting

To secure your site from SQL Injections and Cross-Site Scripting you must validate every user input field. And don't forget about url adress, you must verify $_GET data, too. There is a simple way to do this, without checking every user input.

You can do all with this function:

<?php
/* 
Online PHP Examples with Source Code
website: http://4evertutorials.blogspot.in/
*/
//$arr array to be checked, $html - bool to allow html tags ...
or not
function safe($arr, $html = false)
{
if(!empty($arr))
{
foreach ($arr as $key => $value)
{
//if is array, then check it too
if(is_array($arr[$key]))
{
$arr[$key] = safe($arr[$key]);
}
else
{
//if HTML tags allowed, only securing SQL injections
if($html)
{
$arr[$key] = mysql_real_escape_string($value);
}
//else stripping out HTML characters and
//converting new line to 
and then securing from SQL injections
else
{
$value = nl2br(htmlspecialchars($value));
$arr[$key] = mysql_real_escape_string($value);
}
}
}
}
return $arr;
}



?>

Just put something like this in the beginning of your page $_GET = safe($_GET);

By: 4evertutorials On 12/06/2012

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