{"id":887,"date":"2020-01-30T05:37:31","date_gmt":"2020-01-30T05:37:31","guid":{"rendered":"http:\/\/shaplakanon.com\/wpsupport\/?p=887"},"modified":"2020-02-10T09:21:25","modified_gmt":"2020-02-10T09:21:25","slug":"wordpress-filter-function-to-modify-final-html-output","status":"publish","type":"post","link":"https:\/\/shaplakanon.com\/wpsupport\/wordpress-filter-function-to-modify-final-html-output\/","title":{"rendered":"WordPress filter function to modify final html output"},"content":{"rendered":"\n<p>WordPress has great filter support for getting at all sorts of specific bits of content and modifying it before output. Like\u00a0<code>the_content<\/code>\u00a0filter, which lets you access the markup for a post before it&#8217;s output to the screen. <\/p>\n\n\n\n<p>WordPress also have action hook that fires just before PHP shuts down execution.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">do_action( 'shutdown' )\n\n<\/pre>\n\n\n\n<p>By adding function to this action hook, it is possible to change anything. The following will code work.<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">rs the entire WP process, capturing the final output for manipulation.\n *\/\n\nob_start();\n\nadd_action('shutdown', function() {\n    $final = '';\n\n    \/\/ We'll need to get the number of ob levels we're in, so that we can iterate over each, collecting\n    \/\/ that buffer's output into the final output.\n    $levels = ob_get_level();\n\n    for ($i = 0; $i &lt; $levels; $i++) {\n        $final .= ob_get_clean();\n    }\n\n    \/\/ Apply any filters to the final output\n    echo str_replace('foo', 'bar', $final);\n}, 0);<\/pre>\n\n\n\n<p>The code go to functions.php in your theme&#8217;s file.<\/p>\n\n\n\n<p>If you need any help with code, feel free to comment below.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>WordPress has great filter support for getting at all sorts of specific bits of content and modifying it before output.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[51],"tags":[228,227],"class_list":["post-887","post","type-post","status-publish","format-standard","hentry","category-wordpress","tag-shutdown-hook-wordpress","tag-wordpress-action-hook"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - 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