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<?php
/**
* Implementation for WordPress functions missing in older WordPress versions.
*
* @package WordPress
* @subpackage Importer
*/
if ( ! function_exists( 'wp_slash_strings_only' ) ) {
/**
* Adds slashes to only string values in an array of values.
*
* Compat for WordPress < 5.3.0.
*
* @since 0.7.0
*
* @param mixed $value Scalar or array of scalars.
* @return mixed Slashes $value
*/
function wp_slash_strings_only( $value ) {
return map_deep( $value, 'addslashes_strings_only' );
}
}
if ( ! function_exists( 'addslashes_strings_only' ) ) {
/**
* Adds slashes only if the provided value is a string.
*
* Compat for WordPress < 5.3.0.
*
* @since 0.7.0
*
* @param mixed $value
* @return mixed
*/
function addslashes_strings_only( $value ) {
return is_string( $value ) ? addslashes( $value ) : $value;
}
}
if ( ! function_exists( 'map_deep' ) ) {
/**
* Maps a function to all non-iterable elements of an array or an object.
*
* Compat for WordPress < 4.4.0.
*
* @since 0.7.0
*
* @param mixed $value The array, object, or scalar.
* @param callable $callback The function to map onto $value.
* @return mixed The value with the callback applied to all non-arrays and non-objects inside it.
*/
function map_deep( $value, $callback ) {
if ( is_array( $value ) ) {
foreach ( $value as $index => $item ) {
$value[ $index ] = map_deep( $item, $callback );
}
} elseif ( is_object( $value ) ) {
$object_vars = get_object_vars( $value );
foreach ( $object_vars as $property_name => $property_value ) {
$value->$property_name = map_deep( $property_value, $callback );
}
} else {
$value = call_user_func( $callback, $value );
}
return $value;
}
}