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All output should be run through an escaping function (like esc_html_e() or esc_attr_e()), found '_e'.

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The $text parameter must be a single text string literal. Found: $bg_color

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Global variables defined by a theme/plugin should start with the theme/plugin prefix. Found: "$activate".

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Missing $domain parameter in function call to esc_html_e().

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All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$i'.

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

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

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

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In footer ($in_footer) is not set explicitly wp_register_script; It is recommended to load scripts in the footer. Please set this value to `true` to load it in the footer, or explicitly `false` if it should be loaded in the header.

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