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Edit File: SanitizationUtils.php

<?php namespace Automattic\WooCommerce\StoreApi\Utilities; /** * SanitizationUtils class. * Helper class which sanitizes customer info. */ class SanitizationUtils { /** * Runs wp_kses on an array. This function runs wp_kses on strings in the array and recurses into arrays. * * @param array $array The array to run wp_kses on. * @return mixed The array, all string keys will have been run through wp_kses. */ public function wp_kses_array( array $array ) { foreach ( $array as $key => $value ) { if ( empty( $value ) ) { $array[ $key ] = $value; continue; } if ( is_array( $value ) ) { $array[ $key ] = $this->wp_kses_array( $value ); } if ( is_string( $value ) ) { $array[ $key ] = wp_kses( $value, [] ); } } return $array; } }