<?php
if( !function_exists('wpai_wp_enqueue_code_editor')){
function wpai_wp_enqueue_code_editor( $args ) {

	// We need syntax highlighting to work in the plugin regardless of user setting.
	// Function matches https://developer.wordpress.org/reference/functions/wp_enqueue_code_editor/ otherwise.
	/*if ( is_user_logged_in() && 'false' === wp_get_current_user()->syntax_highlighting ) {
		return false;
	}*/

	$settings = wp_get_code_editor_settings( $args );

	if ( empty( $settings ) || empty( $settings['codemirror'] ) ) {
		return false;
	}

	wp_enqueue_script( 'code-editor' );
	wp_enqueue_style( 'code-editor' );

	if ( isset( $settings['codemirror']['mode'] ) ) {
		$mode = $settings['codemirror']['mode'];
		if ( is_string( $mode ) ) {
			$mode = array(
				'name' => $mode,
			);
		}

		if ( ! empty( $settings['codemirror']['lint'] ) ) {
			switch ( $mode['name'] ) {
				case 'css':
				case 'text/css':
				case 'text/x-scss':
				case 'text/x-less':
					wp_enqueue_script( 'csslint' );
					break;
				case 'htmlmixed':
				case 'text/html':
				case 'php':
				case 'application/x-httpd-php':
				case 'text/x-php':
					wp_enqueue_script( 'htmlhint' );
					wp_enqueue_script( 'csslint' );
					wp_enqueue_script( 'jshint' );
					if ( ! current_user_can( 'unfiltered_html' ) ) {
						wp_enqueue_script( 'htmlhint-kses' );
					}
					break;
				case 'javascript':
				case 'application/ecmascript':
				case 'application/json':
				case 'application/javascript':
				case 'application/ld+json':
				case 'text/typescript':
				case 'application/typescript':
					wp_enqueue_script( 'jshint' );
					wp_enqueue_script( 'jsonlint' );
					break;
			}
		}
	}

	wp_add_inline_script( 'code-editor', sprintf( 'jQuery.extend( wp.codeEditor.defaultSettings, %s );', wp_json_encode( $settings ) ) );

	/**
	 * Fires when scripts and styles are enqueued for the code editor.
	 *
	 * @since 4.9.0
	 *
	 * @param array $settings Settings for the enqueued code editor.
	 */
	do_action( 'wp_enqueue_code_editor', $settings );

	return $settings;
}
}

	if ( ! function_exists('pmxi_if') ) {
		function pmxi_if( $left_condition, $operand, $right_condition, $then, $else = '' ) {
			$str = trim(implode(' ', array($left_condition, html_entity_decode($operand), $right_condition)));
			return (eval ("return ($str);")) ? $then : $else;
		}
	}

	if ( ! function_exists('is_empty') ) {
		function is_empty( $var ) {
		 	return empty($var);
		}
	}

	if ( ! function_exists('pmxi_human_filesize') ) {
		function pmxi_human_filesize($bytes, $decimals = 2) {
		 	$sz = 'BKMGTP';
            $factor = (int) floor((strlen($bytes) - 1) / 3);
            return sprintf("%.{$decimals}f", $bytes / pow(1024, $factor)) . (isset($sz[$factor]) ? $sz[$factor] : '');
		}
	}

	if ( ! function_exists('pmxi_get_remote_image_ext') ) {
		function pmxi_get_remote_image_ext( $filePath ) {
			$response = wp_remote_get($filePath);
			$headers = wp_remote_retrieve_headers( $response );
			$content_type = (!empty($headers['content-type'])) ? explode('/', $headers['content-type']) : false;
			if (!empty($content_type[1])){
                $extensions = wp_all_import_supported_image_extensions();
                $extensions = explode("|", $extensions);
                foreach ($extensions as $extension) {
                    if (preg_match('%' . $extension . '%i', $content_type[1])) return $extension;
                }
                if (preg_match('%pdf%i', $content_type[1])) return 'pdf';
				return ($content_type[1] == "unknown") ? "" : $content_type[1];
			}
			return '';
		}
	}

	if ( ! function_exists('pmxi_getExtension') ) {
		function pmxi_getExtension( $str ){
	        $i = strrpos($str,".");
	        if (!$i) return "";
	        $l = strlen($str) - $i;
	        $ext = substr($str,$i+1,$l);
	        return (strlen($ext) <= 4) ? $ext : "";
		}
	}

	if ( ! function_exists('pmxi_getExtensionFromStr' ) ) {
		function pmxi_getExtensionFromStr( $str ) {
	    	$filetype = wp_check_filetype($str);
            if (empty($filetype['ext'])){
              $filetype = wp_check_filetype(strtok($str, "?"));
            }
	        return ($filetype['ext'] == "unknown") ? "" : $filetype['ext'];
		}
	}

	if ( ! function_exists('pmxi_convert_encoding')) {
		function pmxi_convert_encoding ( $source, $target_encoding = 'ASCII' ) {
			if ( function_exists('mb_detect_encoding') ) {
			    // detect the character encoding of the incoming file
			    $encoding = mb_detect_encoding( $source, "auto" );
			    // escape all of the question marks so we can remove artifacts from
			    // the unicode conversion process
			    $target = str_replace( "?", "[question_mark]", $source );
			    // convert the string to the target encoding
			    $target = mb_convert_encoding( $target, $target_encoding, $encoding);
			    // remove any question marks that have been introduced because of illegal characters
			    $target = str_replace( "?", "", $target );
			    // replace the token string "[question_mark]" with the symbol "?"
			    $target = str_replace( "[question_mark]", "?", $target );
			    return html_entity_decode($target, ENT_COMPAT, 'UTF-8');
			}
			return $source;
		}
	}

	if ( ! function_exists('wp_all_import_get_remote_file_name') ) {
		function wp_all_import_get_remote_file_name( $filePath ) {
		    $bn = wp_all_import_basename($filePath);
			$type = (preg_match('%\W(csv|txt|dat|psv)$%i', $bn)) ? 'csv' : false;
			if (!$type) $type = (preg_match('%\W(xml)$%i', $bn)) ? 'xml' : false;
            if (!$type) $type = (preg_match('%\W(zip)$%i', $bn)) || (preg_match('%\W(get_bundle)$%i', $bn) && strpos($bn, 'export_id') !== false && strpos($bn, 'security_token') !== false) ? 'zip' : false;
			if (!$type) $type = (preg_match('%\W(gz)$%i', $bn)) ? 'gz' : false;

            if(!$type){
                $filePath = strtok($filePath, "?");
                $bn = wp_all_import_basename($filePath);
                $type = (preg_match('%\W(csv|txt|dat|psv)$%i', $bn)) ? 'csv' : false;
                if (!$type) $type = (preg_match('%\W(xml)$%i', $bn)) ? 'xml' : false;
                if (!$type) $type = (preg_match('%\W(zip)$%i', $bn)) ? 'zip' : false;
                if (!$type) $type = (preg_match('%\W(gz)$%i', $bn)) ? 'gz' : false;
            }
			return ($type) ? $type : false;
		}
	}

	if ( ! function_exists('wp_all_import_translate_uri') ) {
		function wp_all_import_translate_uri($uri) {
		    $parts = explode('/', $uri);
		    for ($i = 1; $i < count($parts); $i++) {
		      $parts[$i] = rawurlencode($parts[$i]);
		    }
		    return implode('/', $parts);
		}
	}

	if ( ! function_exists('wp_all_import_cdata_filter') ) {
		function wp_all_import_cdata_filter($matches) {
		    PMXI_Import_Record::$cdata[] = $matches[0];
		    return '{{CPLACE_'. count(PMXI_Import_Record::$cdata) .'}}';
		}
	}

    if ( ! function_exists('wp_all_import_amp_filter') ) {
        function wp_all_import_amp_filter($matches) {
            if (empty($matches[1]) && !empty($matches[0])) {
                return "&amp;";
            }
            return in_array($matches[1], array("amp;", "lt;", "gt;")) ? "&" . $matches[1] : "&amp;" . $matches[1];
        }
    }

	if ( ! function_exists('wp_all_import_isValidMd5') ) {
		function wp_all_import_isValidMd5($md5 ='') {
		    return preg_match('/^[a-f0-9]{32}$/', $md5);
		}
	}

	if ( ! function_exists('wp_all_import_get_relative_path') ) {
		function wp_all_import_get_relative_path($path){
			$uploads = wp_upload_dir();
			return str_replace($uploads['basedir'], '', $path);
		}
	}

	if ( ! function_exists('wp_all_import_get_absolute_path') ) {
		function wp_all_import_get_absolute_path($path) {
			$uploads = wp_upload_dir();
			return ( strpos($path, $uploads['basedir']) === false and ! preg_match('%^https?://%i', $path)) ? $uploads['basedir'] . $path : $path;
		}
	}

	if ( ! function_exists('wp_all_import_clear_xss') ) {
		function wp_all_import_clear_xss( $str ) {
			return stripslashes(esc_sql(htmlspecialchars(strip_tags($str))));
		}
	}

	if ( ! function_exists('wp_all_import_get_taxonomies') ) {
        function wp_all_import_get_taxonomies() {
            // get all taxonomies
            $taxonomies = get_taxonomies(FALSE, 'objects');
            $ignore = array('nav_menu', 'link_category');
            $r = array();
            // populate $r
            foreach ($taxonomies as $taxonomy) {
                if (in_array($taxonomy->name, $ignore)) {
                    continue;
                }
                if ( ! empty($taxonomy->labels->name) && strpos($taxonomy->labels->name, "_") === false){
                    $r[$taxonomy->name] = $taxonomy->labels->name;
                }
                else{
                    $r[$taxonomy->name] = empty($taxonomy->labels->singular_name) ? $taxonomy->name : $taxonomy->labels->singular_name;
                }
            }
            asort($r, SORT_FLAG_CASE | SORT_STRING);
            // return
            return $r;
        }
    }

    if ( ! function_exists('wp_all_import_is_password_protected_feed') ) {
        function wp_all_import_is_password_protected_feed($url){
            $url_data = parse_url($url);
            return (!empty($url_data['user']) and !empty($url_data['pass'])) ? true : false;
        }
    }

    if ( ! function_exists('wp_all_import_cmp_custom_types') ) {
        function wp_all_import_cmp_custom_types($a, $b) {
            return strcmp($a->labels->name, $b->labels->name);
        }
    }

    if ( ! function_exists('wp_all_import_basename') ) {
        function wp_all_import_basename($file) {
            $a = explode('/', $file);
            return end($a);
        }
    }

    if ( ! function_exists('wp_all_import_update_post_count') ) {
        function wp_all_import_update_post_count() {
            global $wpdb;
            update_option( 'post_count', (int) $wpdb->get_var( "SELECT COUNT(ID) FROM {$wpdb->posts} WHERE post_status = 'publish' and post_type = 'post'" ), false );
        }
    }

    if ( ! function_exists('wp_all_import_supported_image_types') ) {
        function wp_all_import_supported_image_types() {
            $supported_image_types = array(IMAGETYPE_GIF, IMAGETYPE_JPEG, IMAGETYPE_PNG, IMAGETYPE_BMP);
            if (defined('IMAGETYPE_WEBP')) {
                $supported_image_types[] = IMAGETYPE_WEBP;
            }
			if(defined('IMAGETYPE_AVIF')) {
				$supported_image_types[] = IMAGETYPE_AVIF;
			}
            return $supported_image_types;
        }
    }

    if ( ! function_exists('wp_all_import_generate_functions_hash') ) {
        function wp_all_import_generate_functions_hash() {
            $uploads = wp_upload_dir();
            $functions_hash = false;
            $functions_file = $uploads['basedir'] . DIRECTORY_SEPARATOR . WP_ALL_IMPORT_UPLOADS_BASE_DIRECTORY . DIRECTORY_SEPARATOR . 'functions.php';
            if (@file_exists($functions_file)) {
                $functions_hash = hash_file('md5', $functions_file);
                // Check functions file from current theme.
                $theme_functions_file = get_template_directory() . '/functions.php';
                if (@file_exists($theme_functions_file)) {
                    $functions_hash .= hash_file('md5', $theme_functions_file);
                }
            }
            return $functions_hash;
        }
    }

    if (!function_exists('wp_all_import_is_update_custom_field')) {
	    function wp_all_import_is_update_custom_field($meta_key, $options) {
		    if ($options['update_all_data'] == 'yes') {
			    return TRUE;
		    }
		    if (!$options['is_update_custom_fields']) {
			    return FALSE;
		    }
		    if ($options['update_custom_fields_logic'] == "full_update") {
			    return TRUE;
		    }
		    if ($options['update_custom_fields_logic'] == "only"
		        && !empty($options['custom_fields_list'])
		        && is_array($options['custom_fields_list'])
		        && in_array($meta_key, $options['custom_fields_list'])
		    ) {
			    return TRUE;
		    }
		    if ($options['update_custom_fields_logic'] == "all_except"
		        && (empty($options['custom_fields_list']) || !in_array($meta_key, $options['custom_fields_list']))
		    ) {
			    return TRUE;
		    }

		    return FALSE;
	    }
    }
    if (!function_exists('wp_all_import_delete_missing_notice')) {
        function wp_all_import_delete_missing_notice( $options ) {

            $options += PMXI_Plugin::get_default_import_options();

            $notice = false;
            if (!empty($options['is_delete_missing'])) {

				switch ($options['custom_type']){
					case 'taxonomies':
						$custom_type = get_taxonomy($options['taxonomy_type']);
						if (empty($custom_type)){
							$custom_type = new stdClass();
							$custom_type->labels = new stdClass();
							$custom_type->labels->name = __('Taxonomy Terms', 'wp-all-import-pro');
							$custom_type->labels->singular_name = __('Taxonomy Term', 'wp-all-import-pro');
						}
						break;
					case 'comments':
						$custom_type = new stdClass();
						$custom_type->labels = new stdClass();
						$custom_type->labels->name = __('Comments', 'wp-all-import-pro');
						$custom_type->labels->singular_name = __('Comment', 'wp-all-import-pro');
						break;
					case 'woo_reviews':
						$custom_type = new stdClass();
						$custom_type->labels = new stdClass();
						$custom_type->labels->name = __('Reviews', 'wp-all-import-pro');
						$custom_type->labels->singular_name = __('Review', 'wp-all-import-pro');
						break;
					default:
						$custom_type = wp_all_import_custom_type( $options['custom_type'] );
						break;
				}

	            if ($options['delete_missing_logic'] == 'all' && $options['delete_missing_action'] == 'keep' && !empty($options['is_change_post_status_of_removed'])) {
		            if( !empty($options['is_send_removed_to_trash']) ) {
			            $notice = sprintf( __( '<span class="important-warning">Warning</span>: Any %s not in your import file will be sent to the trash, even those not created by this import.', 'wp-all-import-pro'), $custom_type->labels->name);
		            }else{
			            $notice = sprintf( __( '<span class="important-warning">Warning</span>: Any %s not in your import file will be marked as %s, even those not created by this import.', 'wp-all-import-pro'), $custom_type->labels->name, $options['status_of_removed'] );
		            }
	            }
                if ($options['delete_missing_logic'] == 'import' && $options['delete_missing_action'] == 'keep' && !empty($options['is_send_removed_to_trash'])) {
                    $notice = sprintf(__('<span class="important-warning">Warning</span>: %s created by this import and no longer present in the import file will be sent to the trash.', 'wp-all-import-pro'), $custom_type->labels->name);
                }
                if ($options['delete_missing_logic'] == 'import' && $options['delete_missing_action'] == 'keep' && !empty($options['is_change_post_status_of_removed'])) {
                	if( !empty($options['is_send_removed_to_trash']) ) {
		                $notice = sprintf( __( '<span class="important-warning">Warning</span>: %s created by this import and no longer present in the import file will be sent to the trash.', 'wp-all-import-pro'), $custom_type->labels->name);
	                }else{
		                $notice = sprintf( __( '<span class="important-warning">Warning</span>: %s created by this import and no longer present in the import file will be marked as %s.', 'wp-all-import-pro'), $custom_type->labels->name, $options['status_of_removed'] );
	                }
                }
                if ($options['delete_missing_logic'] == 'import' && $options['delete_missing_action'] == 'remove') {
                    $notice = sprintf(__('<span class="important-warning">Warning</span>: %s created by this import and no longer present in the import file will be <b>permanently deleted</b>.', 'wp-all-import-pro'), $custom_type->labels->name);
                }
                if ($options['delete_missing_logic'] == 'all' && $options['delete_missing_action'] == 'keep' && !empty($options['is_send_removed_to_trash'])) {
                    $notice = sprintf(__('<span class="important-warning">Warning</span>: Any %s not in your import file will be sent to the trash when this import runs. This includes %s that weren\'t created by this import.', 'wp-all-import-pro'), $custom_type->labels->name, $custom_type->labels->name);
                }
                if ($options['delete_missing_logic'] == 'all' && $options['delete_missing_action'] == 'remove') {
                    $notice = sprintf(__('<span class="important-warning">Warning</span>: Any %s not in your import file will be <b>permanently deleted</b>, even those not created by this import.', 'wp-all-import-pro'), $custom_type->labels->name);
                }
            }
            return $notice;
        }
    }

    if (!function_exists('wp_all_import_custom_type_labels')) {
        function wp_all_import_custom_type_labels($post_type, $taxonomy_type = false) {
            switch ($post_type){
                case 'taxonomies':
                    if (!empty($taxonomy_type)) {
                        $tx = get_taxonomy($taxonomy_type);
                    }
                    $custom_type = new stdClass();
                    $custom_type->name = $post_type;
                    $custom_type->label = empty($tx->labels->name) ? __('Taxonomy Terms', 'wp-all-import-pro') : $tx->labels->name;
                    $custom_type->labels = new stdClass();
                    $custom_type->labels->name = empty($tx->labels->name) ? __('Taxonomy Terms', 'wp-all-import-pro') : $tx->labels->name;
                    $custom_type->labels->singular_name = empty($tx->labels->singular_name) ? __('Taxonomy Term', 'wp-all-import-pro') : $tx->labels->singular_name;
                    break;
                case 'comments':
                    $custom_type = new stdClass();
                    $custom_type->name = $post_type;
                    $custom_type->label = __('Comments', 'wp-all-import-pro');
                    $custom_type->labels = new stdClass();
                    $custom_type->labels->name = __('Comments', 'wp-all-import-pro');
                    $custom_type->labels->singular_name = __('Comment', 'wp-all-import-pro');
                    break;
                case 'woo_reviews':
                    $custom_type = new stdClass();
                    $custom_type->name = $post_type;
                    $custom_type->label = __('WooCommerce Reviews', 'wp-all-import-pro');
                    $custom_type->labels = new stdClass();
                    $custom_type->labels->name = __('WooCommerce Reviews', 'wp-all-import-pro');
                    $custom_type->labels->singular_name = __('Review', 'wp-all-import-pro');
                    break;
                case 'import_users':
                    $custom_type = new stdClass();
                    $custom_type->name = $post_type;
                    $custom_type->label = __('Users', 'wp-all-import-pro');
                    $custom_type->labels = new stdClass();
                    $custom_type->labels->name = __('Users', 'wp-all-import-pro');
                    $custom_type->labels->singular_name = __('User', 'wp-all-import-pro');
                    break;
                case 'gf_entries':
                    $custom_type = new stdClass();
                    $custom_type->name = $post_type;
                    $custom_type->label = __('Gravity Forms Entry', 'wp-all-import-pro');
                    $custom_type->labels = new stdClass();
                    $custom_type->labels->name = __('Gravity Forms Entry', 'wp-all-import-pro');
                    $custom_type->labels->singular_name = __('Gravity Forms Entry', 'wp-all-import-pro');
                    break;
                case 'shop_customer':
                    $custom_type = new stdClass();
                    $custom_type->name = $post_type;
                    $custom_type->label = __('WooCommerce Customers', 'wp-all-import-pro');
                    $custom_type->labels = new stdClass();
                    $custom_type->labels->name = __('WooCommerce Customers', 'wp-all-import-pro');
                    $custom_type->labels->singular_name = __('WooCommerce Customer', 'wp-all-import-pro');
                    break;
                default:
                    $custom_type = wp_all_import_custom_type( $post_type );
                    break;
            }
            return $custom_type;
        }
    }

    if (!function_exists('wp_all_import_get_product_id_by_sku')) {
        function wp_all_import_get_product_id_by_sku( $sku ) {
            global $wpdb;

            // phpcs:ignore WordPress.VIP.DirectDatabaseQuery.DirectQuery
            $id = $wpdb->get_var(
                $wpdb->prepare(
                    "
                    SELECT posts.ID
                    FROM {$wpdb->posts} as posts
                    INNER JOIN {$wpdb->wc_product_meta_lookup} AS lookup ON posts.ID = lookup.product_id
                    WHERE
                    posts.post_type IN ( 'product', 'product_variation' )			
                    AND lookup.sku = %s
                    LIMIT 1
                    ",
                    $sku
                )
            );

            return (int) apply_filters( 'wp_all_import_get_product_id_by_sku', $id, $sku );
        }
    }

    if (!function_exists('wp_all_import_supported_image_extensions')) {
        function wp_all_import_supported_image_extensions() {
            $types = ['svg']; //
            $mime_types = get_allowed_mime_types();
            if ( ! empty($mime_types) ) {
                foreach ($mime_types as $ext => $mime_type) {
                    if (strpos($mime_type, 'image/') !== FALSE) {
                        $types[] = $ext;
                    }
                }
            }
            return implode("|", apply_filters('pmxi_supported_image_extensions', $types));
        }
    }

    if (!function_exists('wp_all_import_get_allowed_zip_extensions')) {
        /**
         * Get allowed file extensions for zip extraction (whitelist approach)
         * @return array
         */
        function wp_all_import_get_allowed_zip_extensions() {
            // Data file extensions
            $data_extensions = array(
                'xml', 'csv', 'txt', 'json', 'sql', 'dat', 'psv', 'tsv','xls','xlsx'
            );

            // Get image extensions from WordPress and plugin
            $image_extensions = array();
            if (function_exists('wp_all_import_supported_image_extensions')) {
                $supported_image_extensions = wp_all_import_supported_image_extensions();
                if ($supported_image_extensions) {
                    $image_extensions = explode('|', $supported_image_extensions);
                }
            }

            // Additional common image extensions not covered by the function
            $additional_image_extensions = array(
                'jpg', 'jpeg', 'png', 'gif', 'bmp', 'webp', 'avif', 'ico', 'tiff', 'tif'
            );

            // Merge all allowed extensions
            $allowed_extensions = array_merge($data_extensions, $image_extensions, $additional_image_extensions);

            // Remove duplicates and empty values
            $allowed_extensions = array_filter(array_unique($allowed_extensions));

            // Apply filter to allow customization
            return apply_filters('wp_all_import_allowed_zip_extensions', $allowed_extensions);
        }
    }

if (!function_exists('pmxi_encode_parenthesis')) {
	function pmxi_encode_parenthesis($input) {
		return strtr($input, [
			'(' => '&lpar;',
			')' => '&rpar;',
			'[' => '&lsqb;',
			']' => '&rsqb;'
		]);
	}
}

if (!function_exists('pmxi_decode_parenthesis')) {
	function pmxi_decode_parenthesis($input) {
		return strtr($input, [
			'&lpar;' => '(',
			'&rpar;' => ')',
			'&lsqb;' => '[',
			'&rsqb;' => ']'
		]);
	}
}

if (!function_exists('pmxi_encode_parenthesis_within_strings')) {
	function pmxi_encode_parenthesis_within_strings(string $code): string {
		$tokens = token_get_all($code);
		$result = '';

		foreach ($tokens as $token) {
			if (is_array($token) && $token[0] === T_CONSTANT_ENCAPSED_STRING) {
				$token[1] = pmxi_encode_parenthesis($token[1]);
			}
			$result .= is_array($token) ? $token[1] : $token;
		}

		return $result;
	}
}

if (!function_exists('pmxi_decode_parenthesis_within_strings')) {
	function pmxi_decode_parenthesis_within_strings(string $code): string {
		$tokens = token_get_all($code);
		$result = '';

		foreach ($tokens as $token) {
			if (is_array($token) && $token[0] === T_CONSTANT_ENCAPSED_STRING) {
				$token[1] = pmxi_decode_parenthesis($token[1]);
			}
			$result .= is_array($token) ? $token[1] : $token;
		}

		return $result;
	}
}

if(!function_exists('pmxi_truncate_term_slug')){
	function pmxi_truncate_term_slug($string, $limit = 200) {
		// Function to check if the string is URL-encoded.
		$is_url_encoded = (urldecode($string) !== $string);

		// Function to truncate URL-encoded strings.
		if ($is_url_encoded) {
			$decoded = rawurldecode($string);
			$encoded_string = '';
			$encoded_length = 0;

			for ($i = 0; $i < mb_strlen($decoded); $i++) {
				$char = mb_substr($decoded, $i, 1);
				$encoded_char = rawurlencode($char);

				if (($encoded_length + strlen($encoded_char)) > $limit) {
					break;
				}

				$encoded_string .= $encoded_char;
				$encoded_length += strlen($encoded_char);
			}

			return $encoded_string;
		} else {
			// If not URL-encoded, simply truncate the string.
			return mb_substr($string, 0, $limit);
		}
	}
}

if(!function_exists('pmxi_maybe_unserialize'))
{
	function pmxi_maybe_unserialize($value)
	{
		if(is_serialized($value)){
			$value = @unserialize(trim($value), ['allowed_classes' => false]);
		}

		return $value;
	}
}
