FooTable

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All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '"<a href='#{$tab['id']}' class='$class'>{$tab['title']}</a>"'.

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

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

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All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '" requires at least version $ver of PHP. You are running an older version ($php_version). Please upgrade!"'.

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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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Processing form data without nonce verification.

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The use of function create_function() is forbidden

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print_r() found. Debug code should not normally be used in production.

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Detected usage of a non-sanitized input variable: $_SERVER[&#039;SCRIPT_FILENAME&#039;]

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Detected usage of a possibly undefined superglobal array index: $_SERVER[&#039;SCRIPT_FILENAME&#039;]. Check that the array index exists before using it.