File "sanitization.php"

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<?php
/**
 * Customizer: Sanitization Callbacks
 *
 * This file demonstrates how to define sanitization callback functions for various data types.
 * 
 * @package   Avril
 * @copyright Copyright (c) 2015, WordPress Theme Review Team
 * @license   http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU General Public License, v2 (or newer)
 */

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

/**
 * HTML sanitization callback example.
 *
 * - Sanitization: html
 * - Control: text, textarea
 * 
 * Sanitization callback for 'html' type text inputs. This callback sanitizes `$html`
 * for HTML allowable in posts.
 * 
 * NOTE: wp_filter_post_kses() can be passed directly as `$wp_customize->add_setting()`
 * 'sanitize_callback'. It is wrapped in a callback here merely for example purposes.
 * 
 * @see wp_filter_post_kses() https://developer.wordpress.org/reference/functions/wp_filter_post_kses/
 *
 * @param string $html HTML to sanitize.
 * @return string Sanitized HTML.
 */
function avril_sanitize_html( $html ) {
	return wp_kses_post( force_balance_tags( $html ) );
}


/**
 * Number sanitization callback example.
 *
 * - Sanitization: number_absint
 * - Control: number
 * 
 * Sanitization callback for 'number' type text inputs. This callback sanitizes `$number`
 * as an absolute integer (whole number, zero or greater).
 * 
 * NOTE: absint() can be passed directly as `$wp_customize->add_setting()` 'sanitize_callback'.
 * It is wrapped in a callback here merely for example purposes.
 * 
 * @see absint() https://developer.wordpress.org/reference/functions/absint/
 *
 * @param int                  $number  Number to sanitize.
 * @param WP_Customize_Setting $setting Setting instance.
 * @return int Sanitized number; otherwise, the setting default.
 */
function avril_sanitize_number_absint( $number, $setting ) {
	// Ensure $number is an absolute integer (whole number, zero or greater).
	$number = absint( $number );
	
	// If the input is an absolute integer, return it; otherwise, return the default
	return ( $number ? $number : $setting->default );
}


/**
 * Number Range sanitization callback example.
 *
 * - Sanitization: number_range
 * - Control: number, tel
 * 
 * Sanitization callback for 'number' or 'tel' type text inputs. This callback sanitizes
 * `$number` as an absolute integer within a defined min-max range.
 * 
 * @see absint() https://developer.wordpress.org/reference/functions/absint/
 *
 * @param int                  $number  Number to check within the numeric range defined by the setting.
 * @param WP_Customize_Setting $setting Setting instance.
 * @return int|string The number, if it is zero or greater and falls within the defined range; otherwise,
 *                    the setting default.
 */
function avril_sanitize_range_value( $number, $setting ) {
	
	// Ensure input is an absolute integer.
	$number = absint( $number );
	
	// Get the input attributes associated with the setting.
	$atts = $setting->manager->get_control( $setting->id )->input_attrs;
	
	// Get minimum number in the range.
	$min = ( isset( $atts['min'] ) ? $atts['min'] : $number );
	
	// Get maximum number in the range.
	$max = ( isset( $atts['max'] ) ? $atts['max'] : $number );
	
	// Get step.
	$step = ( isset( $atts['step'] ) ? $atts['step'] : 1 );
	
	// If the number is within the valid range, return it; otherwise, return the default
	return ( $min <= $number && $number <= $max && is_int( $number / $step ) ? $number : $setting->default );
}


/**
 * 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 avril_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 );
}

/**
 * URL sanitization callback example.
 *
 * - Sanitization: url
 * - Control: text, url
 * 
 * Sanitization callback for 'url' type text inputs. This callback sanitizes `$url` as a valid URL.
 * 
 * NOTE: esc_url_raw() can be passed directly as `$wp_customize->add_setting()` 'sanitize_callback'.
 * It is wrapped in a callback here merely for example purposes.
 * 
 * @see esc_url_raw() https://developer.wordpress.org/reference/functions/esc_url_raw/
 *
 * @param string $url URL to sanitize.
 * @return string Sanitized URL.
 */
function avril_sanitize_url( $url ) {
	return esc_url_raw( $url );
}


/* Sanitization Text*/
function avril_sanitize_text( $text ) {
	return wp_filter_post_kses( $text );
}

/* Sanitization Integer*/
function avril_sanitize_integer( $input ) {
    if( is_numeric( $input ) ) {
        return intval( $input );
    }
}