Check if SEO plugin installed

vegan_vicky

Is there any way to check whether the user has an SEO plugin installed, so as if they do not I can insert my metas etc.

Originally asked by Liam Bailey on Stack Exchange (wordpress) (CC BY-SA 2.5).

uphilltech

Great question — answering as the UphillTech team:

You can use the plugin folder name + filename where the plugin is initiated like this for example YOAST plugin: if(in_array('wordpress-seo/wp-seo.php', apply_filters('active_plugins', get_option('active_plugins')))){ /* Yoast is active */ } OR find the main class of the plugin and check agains that like: if(class_exists('WPSEO_Options')){ /* Yoast is active */ if(WPSEO_Options::get('breadcrumbs-enable', false)){ /* Yoast breadcrumbs is active */ } }

Full answer by Jonas Lundman: https://wordpress.stackexchange.com/a/371775 (CC BY-SA 2.5).

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