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

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Function "wp_send_json_error()" requires WordPress 3.5.0, but your plugin minimum supported version is WordPress 3.1.0.

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Short PHP opening tag used with echo; expected "<?php echo esc_attr ..." but found "<?= esc_attr ..."

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Processing form data without nonce verification.

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

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

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

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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: 6.8 < 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.