apt-get update 显示错误，从 packages.sury.org 更新 apache2 与 php 时签名无效，如下显示：
错误:6 https://packages.sury.org/apache2 bookworm InRelease 下列签名无效： EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key <deb@sury.org> 错误:7 https://packages.sury.org/php bookworm InRelease 下列签名无效： EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key <deb@sury.org> ------------------------------------------------------------------ Err:6 https://packages.sury.org/apache2 bookworm InRelease The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key deb@sury.org Err:7 https://packages.sury.org/php bookworm InRelease The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key deb@sury.org
W: 校验数字签名时出错。此仓库未被更新，所以仍然使用此前的索引文件。GPG 错误：https://packages.sury.org/apache2 bookworm InRelease: 下列签名无效： EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key deb@sury.org
W: 校验数字签名时出错。此仓库未被更新，所以仍然使用此前的索引文件。GPG 错误：https://packages.sury.org/php bookworm InRelease: 下列签名无效： EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key deb@sury.org
W: 无法下载 https://packages.sury.org/apache2/dists/bookworm/InRelease 下列签名无效： EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key deb@sury.org
W: 无法下载 https://packages.sury.org/php/dists/bookworm/InRelease 下列签名无效： EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key deb@sury.org
W: 部分索引文件下载失败。如果忽略它们，那将转而使用旧的索引文件。
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W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://packages.sury.org/apache2 bookworm InRelease: The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key deb@sury.org
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://packages.sury.org/php bookworm InRelease: The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key deb@sury.org
W: Failed to fetch https://packages.sury.org/apache2/dists/bookworm/InRelease The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key deb@sury.org
W: Failed to fetch https://packages.sury.org/php/dists/bookworm/InRelease The following signatures were invalid: EXPKEYSIG B188E2B695BD4743 DEB.SURY.ORG Automatic Signing Key deb@sury.org
W: Some index files failed to download. They have been ignored, or old ones used instead.
解决办法：
参考 packages.sury.org 站点 README.txt 文件的脚本。
apache2 https://packages.sury.org/apache2/README.txt
php https://packages.sury.org/php/README.txt
apache2
apt-get update
apt-get -y install lsb-release ca-certificates curl
curl -sSLo /tmp/debsuryorg-archive-keyring.deb https://packages.sury.org/debsuryorg-archive-keyring.deb
dpkg -i /tmp/debsuryorg-archive-keyring.deb
sh -c 'echo "deb [signed-by=/usr/share/keyrings/deb.sury.org-apache2.gpg] https://packages.sury.org/apache2/ $(lsb_release -sc) main" > /etc/apt/sources.list.d/apache2.list'
apt-get update
php
apt-get update
apt-get -y install lsb-release ca-certificates curl
curl -sSLo /tmp/debsuryorg-archive-keyring.deb https://packages.sury.org/debsuryorg-archive-keyring.deb
dpkg -i /tmp/debsuryorg-archive-keyring.deb
sh -c 'echo "deb [signed-by=/usr/share/keyrings/deb.sury.org-php.gpg] https://packages.sury.org/php/ $(lsb_release -sc) main" > /etc/apt/sources.list.d/php.list'
apt-get update【END】