Add Meta Tag Keywords

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Processing form data without nonce verification.

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Unescaped parameter $prefix_post used in $wpdb->get_results()\n$prefix_post assigned unsafely at line 17.

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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_post

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Detected usage of a non-sanitized input variable: $_POST['hrd_checkbox']

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$_POST['hrd_checkbox'] not unslashed before sanitization. Use wp_unslash() or similar

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Resource version not set in call to wp_enqueue_style(). This means new versions of the style may not always be loaded due to browser caching.

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Detected usage of a possibly undefined superglobal array index: $_POST['hrd_checkbox']. Check that the array index exists before using it.

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