Add a client/company name field to general settings #wordpress #php

add-client-company-field-to-settings.php

<?php
// Add the 'Client/Company Name' field to General Settings.
add_filter(
	'admin_init',
	function () {
		register_setting(
			'general',
			'namespace_client_name',
			'esc_attr'
		);

		add_settings_field(
			'namespace_client_name',
			'<label for="namespace_client_name">Client/Company Name</label>',
			function () {
				$value = get_option( 'namespace_client_name', '' );
				$field_output = '<input type="text" id="namespace_client_name" name="namespace_client_name" class="regular-text" value="' . $value . '" />';
				$field_output .= '<p class="description" id="namespace_client_name-description">The display name of the client or company. To be displayed on the front of the site, for example, in copyright notices.</p>';
				echo $field_output;
			},
			'general'
		);
	}
);