Vanilla PDF Embed

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parse_url() is discouraged because of inconsistency in the output across PHP versions; use wp_parse_url() instead.

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Use of a direct database call is discouraged.

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Direct database call without caching detected. Consider using wp_cache_get() / wp_cache_set() or wp_cache_delete().

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Use placeholders and $wpdb->prepare(); found $prefix

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SQL wildcards for a LIKE query should be passed in through a replacement parameter and the variable part of the replacement should be escaped using "esc_like()". Found: LIKE '%%%s'.

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Plugin name "vanilla-pdf-embed" is different from the name declared in plugin header "Vanilla PDF Embed".

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PHP file should prevent direct access. Add a check like: if ( ! defined( 'ABSPATH' ) ) exit;

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Tested up to: 4.5 < 7.0. The "Tested up to" value in your plugin is not set to the current version of WordPress. This means your plugin will not show up in searches, as we require plugins to be compatible and documented as tested up to the most recent version of WordPress.

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Incorrect Stable Tag. It's recommended not to use "Stable Tag: trunk". Your Stable Tag is meant to be the stable version of your plugin and it needs to be exactly the same with the Version in your main plugin file's header. Any mismatch can prevent users from downloading the correct plugin files from WordPress.org.