Question

I’m trying to echo information on a page after and anchor has been clicked

<a id="anchor">Information</a>
<?php
if(?){
echo 'INFORMATION';
}
?>

Answer 1

That’s where you might want to utilize AJAX. You can often approach it like this:

<a onClick="  $('#output').load('output.php')  ">click here</a> 

<div id="output"><!-- This is where the content goes --></div>

Then define the according PHP script output.php like this:

<?php
    echo $whatever;
?>

jQuery will then issue another HTTP request, invoking a PHP script, and finally injects it where you told it to (#output div).