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// for the local wp installation
❯ cat /srv/www/wordpress/wp-includes/version.php | grep wp_version
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/* Make sure to consult the codex, as the db_version looks different from the wp version. */
/* https://codex.wordpress.org/WordPress_Versions */
SELECT * FROM `wp_options` where option_name = 'db_version'
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$wp_version = get_bloginfo('version');
echo 'WordPress version: ' . $wp_version;
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$wp_version = get_bloginfo( 'version' );
echo "WordPress version: " . $wp_version;