Check if a URL exists.

function url_exists($url) {

//in this case: check if url contents is not null then return 1
if(@file_get_contents($url,0,
<div id=":10w">NULL,0,1))
{
echo "Url exists";
}
else
{
echo "Url does not exist";
}
}

EXAMPLE:
$url_here = ‘http://www.google.com‘
url_exists($url_here);

it prints-> Url exists.

Thank you!

<form action="<a href="https://www.paypal.com/cgi-bin/webscr" target="_blank">https://www.paypal.com/cgi-bin/webscr</a>" method="post">

Set the “cmd” variable to “_cart”

<input type="hidden" name="cmd" value="_cart">

Add a new variable called “add”
* add – Add to Cart buttons

<input type="hidden" name="add" value="1">
 <input type="hidden" name="business" value="<a href="mailto:paypal.testing@gmail.com" target="_blank">paypal.testing@gmail.com</a>">
<input type="hidden" name="currency_code" value="USD">
 <input type="hidden" name="item_name" value="PayPal Shopping Cart">
<input type="hidden" name="amount" value="24.00">
<input type="hidden" name="return" value="<a href="http://www.yoursite.com/thankyou.htm" target="_blank">http://www.yoursite.com/thankyou.htm</a>">
 <input type="image" src="<a href="http://www.paypal.com/en_US/i/btn/sc-but-01.gif" target="_blank">http://www.paypal.com/en_US/i/btn/sc-but-01.gif</a>" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!">
 </form>

You can use the same code in your live site by changing the URL of the action line to point to the live PayPal site.
You must first be logged into your Sandbox Developer Account to test your PayPal Shopping Cart button code.

DEMO:

Thanks.

2. Elite SEM Calculator
This application is perfect on the marketing side of SEO. It gives you multiple calculators for daily Search Engine Marketing equations.
a. CPM calculator – this calculator calculate impressions, dollars, & Cost Per Thousand (CPM) Rate.
b. Display Campaign Cost Per Action (CPA) – you can check your CPA based on your Click thru & Conversion rate.
c. Allows you to figure out how successful a banner or email campaign will be by allowing you to enter numbers which will give you different scenarios.
d. CPC to CPM Calculator – allows you to enter your CPC price & your CTR which will calculate your CPM, so you can decide if a CPC or CPM buy is more effective.
e. Max CPC to PPC Calculator - allows you to enter your CPO goal & your site conversion rate, which will show you the max CPC you can spend on a search or banner campaign.

Other features is a DMA lookup in which you can enter DMA number to learn what city that DMA is for, or the opposite. You can enter a city name to learn the DMA number.

3.  iSEO
iSEO is a very convenient application that enables you to check the keyword density, email the results to anyone, and you can tell a friend about the application. It provides website statistics and graphs. It includes information how many pages are indexed with major search engines.

	<script type="text/javascript">
	function showText(vThis)
	{
	vParent = vThis.parentNode;
	vSibling = vParent.nextSibling;
	while (vSibling.nodeType==3) { // Fix for Mozilla/FireFox Empty Space becomes a TextNode or Something
	vSibling = vSibling.nextSibling;
	};
		if(vSibling.style.display == "none")
		{
		document.getElementById('link').innerHTML = "Hide";
		vSibling.style.display = "block";
		} else {
		document.getElementById('link').innerHTML = "Show";
		vSibling.style.display = "none";
		}
	return;
	}
	</script>

For example if you wanted to hide this link:

click on link Hide it hides div #text .

Example:

Hide

<a onclick="showText(this);" id="link">Hide</a>

<div id="text">
 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc volutpat ante et ante. Donec sodales lacinia ante. Quisque sem urna, iaculis id, rhoncus ac, venenatis ut, massa. Mauris sit amet mauris. Aliquam ut massa at ante condimentum gravida. Etiam pulvinar massa a ante. Integer pharetra. Fusce quam neque, aliquet tristique, ullamcorper id, blandit id, tortor. Nunc lacinia egestas enim. Maecenas molestie rhoncus quam.
</div>

After you clicked on it, the link Hide change the text to Show. with this javascript function ( document.getElementById(‘link’).innerHTML = “Show”; )

Using the onchange=”this.form.submit();” on your select.

Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

<form action="#urlhere" method="post">

			<select name="choose" onchange="this.form.submit();">

			<option value="1">1</option>

			<option value="2">2</option>

			<option value="3">3</option>

			<option value="4">4</option>

			<option value="5">5</option>

			</select>

		</form>

Example:

Thank You!

Here is some tips how to avoid that:
1. Always backup your database.
2. Make sure you know what your doing. Consult to Magento forums if needed.
3. Go to app/etc/local.xml, look for this code

<connection>
    <host><![CDATA[localhost]]></host>
    <username><![CDATA[root]]></username>
    <password><![CDATA[password_here]]></password>
    <dbname><![CDATA[your_database_here]]></dbname>
    <active>1</active>
</connection>

– You can now update your own database settings.
4. Final thing to do is clear or delete magento’s cache files from the directory: var/cache.

	<script type="text/javascript">
	function showText(vThis)
	{
	vParent = vThis.parentNode;
	vSibling = vParent.nextSibling;
	while (vSibling.nodeType==3) { // Fix for Mozilla/FireFox Empty Space becomes a TextNode or Something
	vSibling = vSibling.nextSibling;
	};
		if(vSibling.style.display == "none")
		{
		document.getElementById('link').innerHTML = "Hide";
		vSibling.style.display = "block";
		} else {
		document.getElementById('link').innerHTML = "Show";
		vSibling.style.display = "none";
		}
	return;
	}
	</script>

For example if you wanted to hide this link:

click on link Hide it hides div #text .

Example:

Hide

<a onclick="showText(this);" id="link">Hide</a>

<div id="text">
 Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc volutpat ante et ante. Donec sodales lacinia ante. Quisque sem urna, iaculis id, rhoncus ac, venenatis ut, massa. Mauris sit amet mauris. Aliquam ut massa at ante condimentum gravida. Etiam pulvinar massa a ante. Integer pharetra. Fusce quam neque, aliquet tristique, ullamcorper id, blandit id, tortor. Nunc lacinia egestas enim. Maecenas molestie rhoncus quam.
</div>

After you clicked on it, the link Hide change the text to Show. with this javascript function ( document.getElementById(‘link’).innerHTML = “Show”; )