PHP output buffering. Great for WordPress shortcodes

php-output-buffering.php

<?php


// generic usage
ob_start();
?>

<h1>Begin Content</h1>
<p>Content</p>

<?
$ob_str=ob_get_contents();
ob_end_clean();
echo $ob_str;



// Example of use in a WordPress Shortcode
add_shortcode('shortcode_name','func_shortcode_name');
function func_shortcode_name( $atts, $content = null ) {
  extract( shortcode_atts( array(
    'attribute1' => 'default_value',
  ), $atts ) );
  ob_start();
  ?>
  <h1>Shortcode Output</h1>
  <p><? echo $attribute1 ?></p>
  <?
  $ob_str=ob_get_contents();
  ob_end_clean();
  return $ob_str;
}