Using ${var} in strings is deprecated, use {$var} #182
Description
Describe the bug
I have just installed and activated the plugin but it generates the following error on both Wordpress backend and website frontend:
Deprecated: Using ${var} in strings is deprecated, use {$var} instead in /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/plugins/ad-refresh-control/includes/functions/core.php on line 78
Warning: Cannot modify header information - headers already sent by (output started at /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/plugins/ad-refresh-control/includes/functions/core.php:78) in /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-includes/functions.php on line 7168
Warning: Cannot modify header information - headers already sent by (output started at /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/plugins/ad-refresh-control/includes/functions/core.php:78) in /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-includes/functions.php on line 7144
Warning: Cannot modify header information - headers already sent by (output started at /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/plugins/ad-refresh-control/includes/functions/core.php:78) in /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-admin/admin-header.php on line 14
Steps to Reproduce
- Install Ad Refresh Control plugin
- Activate the plugin
- The error appears at the top of the page following refresh
Screenshots, screen recording, code snippet
No response
Environment information
No response
WordPress information
`
wp-core
version: 6.8.2
site_language: en_GB
user_language: en_GB
timezone: Europe/London
permalink: /%postname%
https_status: true
multisite: false
user_registration: 0
blog_public: 1
default_comment_status: open
environment_type: production
user_count: 2
dotorg_communication: true
wp-paths-sizes
wordpress_path: /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips
wordpress_size: 110.28 MB (115635504 bytes)
uploads_path: /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/uploads
uploads_size: 23.10 MB (24218970 bytes)
themes_path: /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/themes
themes_size: 11.71 MB (12278306 bytes)
plugins_path: /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/plugins
plugins_size: 251.73 MB (263958340 bytes)
fonts_path: /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/uploads/fonts
fonts_size: directory not found
database_size: 180.31 MB (189071360 bytes)
total_size: 577.13 MB (605162480 bytes)
wp-dropins (1)
object-cache.php: true
wp-active-theme
name: Hemingway (hemingway)
version: 2.3.2
author: Anders Norén
author_website: https://andersnoren.se
parent_theme: none
theme_features: core-block-patterns, widgets-block-editor, automatic-feed-links, custom-background, post-thumbnails, post-formats, custom-header, custom-logo, title-tag, html5, menus, align-wide, editor-color-palette, editor-font-sizes, widgets, editor-style
theme_path: /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/themes/hemingway
auto_update: Disabled
wp-themes-inactive (2)
Twenty Twenty-Five: version: 1.3, author: the WordPress team, Auto-updates disabled
Twenty Twenty-Four: version: 1.3, author: the WordPress team, Auto-updates disabled
wp-mu-plugins (1)
1&1 Product Subdomain: version: 1.1.0, author: 1&1
wp-plugins-active (22)
aBlocks: version: 2.2.0, author: Academy LMS, Auto-updates disabled
Ad Refresh Control: version: 1.1.5, author: 10up, Auto-updates disabled
Advanced Editor Tools: version: 5.9.2, author: Automattic, Auto-updates disabled
AffiliateX – Amazon Affiliate Plugin: version: 1.3.7.2, author: AffiliateX, Auto-updates disabled
Antispam Bee: version: 2.11.8, author: pluginkollektiv, Auto-updates disabled
Currency Converter Widget ⚡ PRO: version: 1.0.8, author: CurrencyRate.today, Auto-updates disabled
Easy WP SMTP: version: 2.12.0, author: Easy WP SMTP, Auto-updates disabled
IndexNow: version: 1.0.3, author: Microsoft Bing, Auto-updates disabled
Jetpack: version: 15.0, author: Automattic, Auto-updates disabled
Jetpack Boost: version: 4.3.1, author: Automattic - Jetpack Site Speed team, Auto-updates disabled
Kadence Blocks – Gutenberg Blocks for Page Builder Features: version: 3.5.20, author: Kadence WP, Auto-updates disabled
Limit Login Attempts Reloaded: version: 2.26.23, author: Limit Login Attempts Reloaded, Auto-updates disabled
LiteSpeed Cache: version: 7.5.0.1, author: LiteSpeed Technologies, Auto-updates disabled
Matomo Analytics - Ethical Stats. Powerful Insights.: version: 5.3.3, author: Matomo, Auto-updates disabled
Noptin - WordPress Newsletter Plugin: version: 4.0.6, author: Noptin Newsletter, Auto-updates disabled
Open Currency Converter: version: 1.5.0, author: Joe Hawes, Auto-updates disabled
Regenerate Thumbnails Advanced: version: 2.5.0, author: ShortPixel, Auto-updates disabled
Shariff Wrapper: version: 4.6.15, author: Jan-Peter Lambeck & 3UU, Auto-updates disabled
Statify: version: 1.8.5, author: pluginkollektiv, Auto-updates disabled
Sub Categories Widget: version: 1.5.2, author: BrokenCrust, Auto-updates disabled
UpdraftPlus - Backup/Restore: version: 1.25.7, author: TeamUpdraft, DavidAnderson, Auto-updates disabled
Yoast SEO: version: 25.9, author: Team Yoast, Auto-updates disabled
wp-plugins-inactive (4)
Advanced Ads: version: 2.0.11, author: Advanced Ads, Auto-updates disabled
AMAZING Affiliates: version: 1.0.14, author: pizza2mozzarella, Auto-updates disabled
Broken Link Checker: version: 2.4.6, author: WPMU DEV, Auto-updates disabled
PurpleAds: version: 1.0.2, author: PurpleAds LTD, Auto-updates disabled
wp-media
image_editor: WP_Image_Editor_GD
imagick_module_version: Not available
imagemagick_version: Not available
imagick_version: Not available
file_uploads: 1
post_max_size: 2048M
upload_max_filesize: 2048M
max_effective_size: 2 GB
max_file_uploads: 20
gd_version: 2.3.0
gd_formats: GIF, JPEG, PNG, WebP, BMP, XPM
ghostscript_version: 9.53.3
wp-server
server_architecture: Linux 4.4.400-icpu-101 x86_64
httpd_software: Apache
php_version: 8.2.29 64bit
php_sapi: cgi-fcgi
max_input_variables: 3000
time_limit: 120
memory_limit: 2048M
max_input_time: 120
upload_max_filesize: 2048M
php_post_max_size: 2048M
curl_version: 7.74.0 OpenSSL/1.1.1w
suhosin: false
imagick_availability: false
pretty_permalinks: true
htaccess_extra_rules: true
static_robotstxt_file: true
current: 2025-09-14T15:26:57+00:00
utc-time: Sunday, 14-Sep-25 15:26:57 UTC
server-time: 2025-09-14T16:26:55+01:00
wp-database
extension: mysqli
server_version: 10.11.14-MariaDB-deb11-log
client_version: mysqlnd 8.2.29
max_allowed_packet: 67108864
max_connections: 3000
wp-constants
WP_HOME: undefined
WP_SITEURL: undefined
WP_CONTENT_DIR: /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content
WP_PLUGIN_DIR: /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/plugins
WP_MEMORY_LIMIT: 40M
WP_MAX_MEMORY_LIMIT: 2048M
WP_DEBUG: true
WP_DEBUG_DISPLAY: true
WP_DEBUG_LOG: true
SCRIPT_DEBUG: false
WP_CACHE: true
CONCATENATE_SCRIPTS: undefined
COMPRESS_SCRIPTS: undefined
COMPRESS_CSS: undefined
WP_ENVIRONMENT_TYPE: undefined
WP_DEVELOPMENT_MODE: undefined
DB_CHARSET: utf8
DB_COLLATE: undefined
wp-filesystem
wordpress: writable
wp-content: writable
uploads: writable
plugins: writable
themes: writable
fonts: does not exist
mu-plugins: writable
jetpack
site_id: 208970862
ssl_cert: No
time_diff: undefined
version_option: 15.0:1757590698
old_version: 15.0:1757590698
public: Public
master_user: #1 blloyd78
is_offline_mode: off
is_offline_mode_constant: off
current_user: #1 blloyd78
tokens_set: Blog User
blog_token: v1Z3OCvxFiN%qTF2b)U*(fXEOPy2)Vpy
user_token: 7RACg06JaNw7a#k$j@jsyDkVD%m)izRL
version: 15.0
jp_plugin_dir: /homepages/45/d544178688/htdocs/clickandbuilds/ReallyUsefulTravelTips/wp-content/plugins/jetpack/
plan: free
protect_header: false
full_sync: {"start_action_processed":true,"cancelled_action_processed":true,"started":"Thu, 11 Sep 2025 11:40:25 +0000","finished":"Thu, 11 Sep 2025 11:40:35 +0000","progress":{"options":{"total":194,"sent":194,"finished":true},"functions":{"total":43,"sent":43,"finished":true},"constants":{"total":21,"sent":21,"finished":true},"users":{"total":"2","sent":1,"finished":true,"last_sent":"1"},"network_options":{"total":5,"sent":5,"finished":true}},"config":{"options":true,"functions":true,"constants":true,"users":[1],"network_options":true},"context":"initial_sync"}
sync_size: undefined
sync_lag: 0 seconds
full_sync_size: undefined
full_sync_lag: 0 seconds
idc_urls: {"home":"https://www.journeyintodarkness.co.uk","siteurl":"https://www.journeyintodarkness.co.uk","WP_HOME":"","WP_SITEURL":""}
idc_error_option: false
idc_optin: true
cxn_tests: {"9":{"name":"test__wpcom_connection_test","label":false,"short_description":"Journey into Darkness is not connected.: 200","long_description":"
A healthy connection ensures Jetpack essential services are provided to your WordPress site, such as Stats and Site Security.</p>
<span class="dashicons fail"><span class="screen-reader-text">Error</span></span> Journey into Darkness is not connected.: 200</p>
We recommend reconnecting Jetpack.</strong></p>","severity":"critical","action":"https://www.journeyintodarkness.co.uk/wp-admin/admin.php?page=jetpack#/reconnect","action_label":"Reconnect Jetpack now","show_in_site_health":true,"pass":false,"group":["default"],"type":"direct"}}
kadence-blocks
version: 3.5.20
last_updated: 1757615991
previous_version: 3.5.19
pro_active: No
deactivated_blocks: None
block_defaults: Yes
block_visibility: No
custom_colors: No
recaptcha_key: No
maps_key: No
mailerlite_key: No
cloud_connect: No
easy_wp_smtp
version: 2.12.0
license_key_type: lite
debug: No debug notices found.
lite_install_date: Apr 22, 2025 @ 3:57pm
`
Code of Conduct
- I agree to follow this project's Code of Conduct