View difference between Paste ID: f20c26599 and

-
+@@// In a theme, plugin, or whatever. This filter controls an <h2> with the text "Title".
 
 <div class="foobar">
 	<h2><?php echo apply_filters( 'coolprefix_some_random_title', 'Title' ); ?></h2>
 
 <?php
 	// By default, the content is not shown. We can change this filter to "true" to show it.
 	if ( true == apply_filters( 'coolprefix_displaycontent', false ) :
 ?>
 	<p>Some content.</p>
 <?php endif; ?>
 </div>
 
 
 @@// In a plugin or the theme's functions.php file.
 
 <?php
 
 add_filter( 'coolprefix_some_random_title', 'my_title_function' );
 add_filter( 'coolprefix_displaycontent', 'my_content_function' );
 
 function my_title_function( $title ) {
 	// Add something onto the end of the existing title
 	$title = $title . ' Is Cool';
 
 	// Or ignore any existing data (from other filters or the theme)
 	$title = 'New Title';
 
 	// This is important as we need to allow other filters to filter what we return
 	// And to allow the usage of the filter in PHP (i.e. storing it to a variable)
 	return $title;
 }
 
 // This function doesn't accept any parameters because we don't care what was passed to it (i.e. the existing value)
 function my_content_function() {
 	return true;
 }
 
 ?>