Open Currency Converter

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

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

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

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

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

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

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A function call to __() with texts containing placeholders was found, but was not accompanied by a "translators:" comment on the line above to clarify the meaning of the placeholders.

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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.

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Missing "License" in Plugin Header. Please update your Plugin Header with a valid GPLv2 (or later) compatible license.