


Installing php7.0 on ubuntu16.04 prompts this:
<code>pcd@pcd-All-Series:~/桌面$ sudo apt-get install php7.0 [sudo] pcd 的密码: 正在读取软件包列表... 完成 正在分析软件包的依赖关系树 正在读取状态信息... 完成 php7.0 已经是最新版 (7.0.10-2+deb.sury.org~xenial+1)。 升级了 0 个软件包,新安装了 0 个软件包,要卸载 0 个软件包,有 0 个软件包未被升级。 有 3 个软件包没有被完全安装或卸载。 解压缩后会消耗 0 B 的额外空间。 您希望继续执行吗? [Y/n] y 正在设置 libapache2-mod-php7.0 (7.0.10-2+deb.sury.org~xenial+1) ... Not replacing deleted config file /etc/php/7.0/apache2/php.ini php_invoke: Enable module xmlwriter for apache2 sapi php_invoke: Enable module xml for apache2 sapi php_invoke: Enable module fileinfo for apache2 sapi php_invoke: Enable module shmop for apache2 sapi php_invoke: Enable module calendar for apache2 sapi php_invoke: Enable module sysvsem for apache2 sapi php_invoke: Enable module exif for apache2 sapi php_invoke: Enable module xmlreader for apache2 sapi php_invoke: Enable module json for apache2 sapi php_invoke: Enable module tokenizer for apache2 sapi php_invoke: Enable module simplexml for apache2 sapi php_invoke: Enable module dom for apache2 sapi php_invoke: Enable module posix for apache2 sapi php_invoke: Enable module gettext for apache2 sapi php_invoke: Enable module sysvmsg for apache2 sapi php_invoke: Enable module sysvshm for apache2 sapi php_invoke: Enable module wddx for apache2 sapi php_invoke: Enable module xsl for apache2 sapi php_invoke: Enable module readline for apache2 sapi php_invoke: Enable module ctype for apache2 sapi php_invoke: Enable module phar for apache2 sapi php_invoke: Enable module ftp for apache2 sapi php_invoke: Enable module opcache for apache2 sapi php_invoke: Enable module pdo for apache2 sapi php_invoke: Enable module sockets for apache2 sapi php_invoke: Enable module iconv for apache2 sapi dpkg: 处理软件包 libapache2-mod-php7.0 (--configure)时出错: 子进程 已安装 post-installation 脚本 返回错误状态 1 正在设置 php7.0-fpm (7.0.10-2+deb.sury.org~xenial+1) ... Not replacing deleted config file /etc/php/7.0/fpm/php.ini php_invoke: Enable module xmlwriter for fpm sapi php_invoke: Enable module xml for fpm sapi php_invoke: Enable module fileinfo for fpm sapi php_invoke: Enable module shmop for fpm sapi php_invoke: Enable module calendar for fpm sapi php_invoke: Enable module sysvsem for fpm sapi php_invoke: Enable module exif for fpm sapi php_invoke: Enable module xmlreader for fpm sapi php_invoke: Enable module json for fpm sapi php_invoke: Enable module tokenizer for fpm sapi php_invoke: Enable module simplexml for fpm sapi php_invoke: Enable module dom for fpm sapi php_invoke: Enable module posix for fpm sapi php_invoke: Enable module gettext for fpm sapi php_invoke: Enable module sysvmsg for fpm sapi php_invoke: Enable module sysvshm for fpm sapi php_invoke: Enable module wddx for fpm sapi php_invoke: Enable module xsl for fpm sapi php_invoke: Enable module readline for fpm sapi php_invoke: Enable module ctype for fpm sapi php_invoke: Enable module phar for fpm sapi php_invoke: Enable module ftp for fpm sapi php_invoke: Enable module opcache for fpm sapi php_invoke: Enable module pdo for fpm sapi php_invoke: Enable module sockets for fpm sapi php_invoke: Enable module iconv for fpm sapi NOTICE: Not enabling PHP 7.0 FPM by default. NOTICE: To enable PHP 7.0 FPM in Apache2 do: NOTICE: a2enmod proxy_fcgi setenvif NOTICE: a2enconf php7.0-fpm NOTICE: You are seeing this message because you have apache2 package installed. initctl: 无法连接到 Upstart: Failed to connect to socket /com/ubuntu/upstart: 拒绝连接 insserv: warning: script 'scrapyd' missing LSB tags and overrides insserv: Default-Start undefined, assuming empty start runlevel(s) for script `scrapyd' insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `scrapyd' Job for php7.0-fpm.service failed because the control process exited with error code. See "systemctl status php7.0-fpm.service" and "journalctl -xe" for details. invoke-rc.d: initscript php7.0-fpm, action "restart" failed. dpkg: 处理软件包 php7.0-fpm (--configure)时出错: 子进程 已安装 post-installation 脚本 返回错误状态 1 dpkg: 依赖关系问题使得 php7.0 的配置工作不能继续: php7.0 依赖于 libapache2-mod-php7.0 | php7.0-fpm | php7.0-cgi;然而: 软件包 libapache2-mod-php7.0 尚未配置。 软件包 php7.0-fpm 尚未配置。 未安装软件包 php7.0-cgi。 dpkg: 处理软件包 php7.0 (--configure)时出错: 依赖关系问题 - 仍未被配置 因为错误消息指示这是由于上一个问题导致的错误,没有写入 apport 报告。 在处理时有错误发生: libapache2-mod-php7.0 php7.0-fpm php7.0 E: Sub-process /usr/bin/dpkg returned an error code (1) pcd@pcd-All-Series:~/桌面$ </code>
In this case, I installed other PHP-related software in the same way. Since the configuration work cannot be continued, there is really no way to solve it. Let me ask the experts here for advice
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Installing php7.0 on ubuntu16.04 prompts this:
<code>pcd@pcd-All-Series:~/桌面$ sudo apt-get install php7.0 [sudo] pcd 的密码: 正在读取软件包列表... 完成 正在分析软件包的依赖关系树 正在读取状态信息... 完成 php7.0 已经是最新版 (7.0.10-2+deb.sury.org~xenial+1)。 升级了 0 个软件包,新安装了 0 个软件包,要卸载 0 个软件包,有 0 个软件包未被升级。 有 3 个软件包没有被完全安装或卸载。 解压缩后会消耗 0 B 的额外空间。 您希望继续执行吗? [Y/n] y 正在设置 libapache2-mod-php7.0 (7.0.10-2+deb.sury.org~xenial+1) ... Not replacing deleted config file /etc/php/7.0/apache2/php.ini php_invoke: Enable module xmlwriter for apache2 sapi php_invoke: Enable module xml for apache2 sapi php_invoke: Enable module fileinfo for apache2 sapi php_invoke: Enable module shmop for apache2 sapi php_invoke: Enable module calendar for apache2 sapi php_invoke: Enable module sysvsem for apache2 sapi php_invoke: Enable module exif for apache2 sapi php_invoke: Enable module xmlreader for apache2 sapi php_invoke: Enable module json for apache2 sapi php_invoke: Enable module tokenizer for apache2 sapi php_invoke: Enable module simplexml for apache2 sapi php_invoke: Enable module dom for apache2 sapi php_invoke: Enable module posix for apache2 sapi php_invoke: Enable module gettext for apache2 sapi php_invoke: Enable module sysvmsg for apache2 sapi php_invoke: Enable module sysvshm for apache2 sapi php_invoke: Enable module wddx for apache2 sapi php_invoke: Enable module xsl for apache2 sapi php_invoke: Enable module readline for apache2 sapi php_invoke: Enable module ctype for apache2 sapi php_invoke: Enable module phar for apache2 sapi php_invoke: Enable module ftp for apache2 sapi php_invoke: Enable module opcache for apache2 sapi php_invoke: Enable module pdo for apache2 sapi php_invoke: Enable module sockets for apache2 sapi php_invoke: Enable module iconv for apache2 sapi dpkg: 处理软件包 libapache2-mod-php7.0 (--configure)时出错: 子进程 已安装 post-installation 脚本 返回错误状态 1 正在设置 php7.0-fpm (7.0.10-2+deb.sury.org~xenial+1) ... Not replacing deleted config file /etc/php/7.0/fpm/php.ini php_invoke: Enable module xmlwriter for fpm sapi php_invoke: Enable module xml for fpm sapi php_invoke: Enable module fileinfo for fpm sapi php_invoke: Enable module shmop for fpm sapi php_invoke: Enable module calendar for fpm sapi php_invoke: Enable module sysvsem for fpm sapi php_invoke: Enable module exif for fpm sapi php_invoke: Enable module xmlreader for fpm sapi php_invoke: Enable module json for fpm sapi php_invoke: Enable module tokenizer for fpm sapi php_invoke: Enable module simplexml for fpm sapi php_invoke: Enable module dom for fpm sapi php_invoke: Enable module posix for fpm sapi php_invoke: Enable module gettext for fpm sapi php_invoke: Enable module sysvmsg for fpm sapi php_invoke: Enable module sysvshm for fpm sapi php_invoke: Enable module wddx for fpm sapi php_invoke: Enable module xsl for fpm sapi php_invoke: Enable module readline for fpm sapi php_invoke: Enable module ctype for fpm sapi php_invoke: Enable module phar for fpm sapi php_invoke: Enable module ftp for fpm sapi php_invoke: Enable module opcache for fpm sapi php_invoke: Enable module pdo for fpm sapi php_invoke: Enable module sockets for fpm sapi php_invoke: Enable module iconv for fpm sapi NOTICE: Not enabling PHP 7.0 FPM by default. NOTICE: To enable PHP 7.0 FPM in Apache2 do: NOTICE: a2enmod proxy_fcgi setenvif NOTICE: a2enconf php7.0-fpm NOTICE: You are seeing this message because you have apache2 package installed. initctl: 无法连接到 Upstart: Failed to connect to socket /com/ubuntu/upstart: 拒绝连接 insserv: warning: script 'scrapyd' missing LSB tags and overrides insserv: Default-Start undefined, assuming empty start runlevel(s) for script `scrapyd' insserv: Default-Stop undefined, assuming empty stop runlevel(s) for script `scrapyd' Job for php7.0-fpm.service failed because the control process exited with error code. See "systemctl status php7.0-fpm.service" and "journalctl -xe" for details. invoke-rc.d: initscript php7.0-fpm, action "restart" failed. dpkg: 处理软件包 php7.0-fpm (--configure)时出错: 子进程 已安装 post-installation 脚本 返回错误状态 1 dpkg: 依赖关系问题使得 php7.0 的配置工作不能继续: php7.0 依赖于 libapache2-mod-php7.0 | php7.0-fpm | php7.0-cgi;然而: 软件包 libapache2-mod-php7.0 尚未配置。 软件包 php7.0-fpm 尚未配置。 未安装软件包 php7.0-cgi。 dpkg: 处理软件包 php7.0 (--configure)时出错: 依赖关系问题 - 仍未被配置 因为错误消息指示这是由于上一个问题导致的错误,没有写入 apport 报告。 在处理时有错误发生: libapache2-mod-php7.0 php7.0-fpm php7.0 E: Sub-process /usr/bin/dpkg returned an error code (1) pcd@pcd-All-Series:~/桌面$ </code>
In this case, I installed other PHP-related software in the same way. Since the configuration work cannot be continued, there is really no way to solve it. Let me ask the experts here for advice
sudo mv /var/lib/dpkg/info /var/lib/dpkg/info.bak //Now rename the info folder
sudo mkdir /var/lib/dpkg/info //Create a new info folder
sudo apt-get install libapache2-mod-php7.0
sudo apt-get install php7.0-fpm
sudo apt-get install php7.0
sudo mv /var/lib/dpkg/info.bak /var/lib /dpkg/info

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.

In PHP, use the clone keyword to create a copy of the object and customize the cloning behavior through the \_\_clone magic method. 1. Use the clone keyword to make a shallow copy, cloning the object's properties but not the object's properties. 2. The \_\_clone method can deeply copy nested objects to avoid shallow copying problems. 3. Pay attention to avoid circular references and performance problems in cloning, and optimize cloning operations to improve efficiency.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.

Key players in HTTP cache headers include Cache-Control, ETag, and Last-Modified. 1.Cache-Control is used to control caching policies. Example: Cache-Control:max-age=3600,public. 2. ETag verifies resource changes through unique identifiers, example: ETag: "686897696a7c876b7e". 3.Last-Modified indicates the resource's last modification time, example: Last-Modified:Wed,21Oct201507:28:00GMT.

In PHP, password_hash and password_verify functions should be used to implement secure password hashing, and MD5 or SHA1 should not be used. 1) password_hash generates a hash containing salt values to enhance security. 2) Password_verify verify password and ensure security by comparing hash values. 3) MD5 and SHA1 are vulnerable and lack salt values, and are not suitable for modern password security.

PHP is a server-side scripting language used for dynamic web development and server-side applications. 1.PHP is an interpreted language that does not require compilation and is suitable for rapid development. 2. PHP code is embedded in HTML, making it easy to develop web pages. 3. PHP processes server-side logic, generates HTML output, and supports user interaction and data processing. 4. PHP can interact with the database, process form submission, and execute server-side tasks.

PHP has shaped the network over the past few decades and will continue to play an important role in web development. 1) PHP originated in 1994 and has become the first choice for developers due to its ease of use and seamless integration with MySQL. 2) Its core functions include generating dynamic content and integrating with the database, allowing the website to be updated in real time and displayed in personalized manner. 3) The wide application and ecosystem of PHP have driven its long-term impact, but it also faces version updates and security challenges. 4) Performance improvements in recent years, such as the release of PHP7, enable it to compete with modern languages. 5) In the future, PHP needs to deal with new challenges such as containerization and microservices, but its flexibility and active community make it adaptable.

The core benefits of PHP include ease of learning, strong web development support, rich libraries and frameworks, high performance and scalability, cross-platform compatibility, and cost-effectiveness. 1) Easy to learn and use, suitable for beginners; 2) Good integration with web servers and supports multiple databases; 3) Have powerful frameworks such as Laravel; 4) High performance can be achieved through optimization; 5) Support multiple operating systems; 6) Open source to reduce development costs.


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