This is partly because to make this error go away, sometimes the solution involves multiple server, application or service config changes. Keep in mind that this error can be logged in a few ways, as listed below. In addition, at times the error is only an indication of a deeper underlying issue. Meaning the error could be due to a problem or bug in your connecting application or remote service.
MySQL Numeric Functions
In which case, you need to check ALL related error logs with the same timestamp, to determine whether another issue may be to blame. With this in mind, here are error log examples of the MySQL server has gone away error:. Often, it gets lowered arbitrarily. This section covers extended PHP topics that are worth considering in your development work, but not related to every Web application.
Build a CMS in an Afternoon with PHP and MySQL
After taking this section, the learner will become familiar with the foundational information required to build a sample content management site through PHP interactions using a database. This section provides an overview of the user registration system. After taking this section, the learner will have the information and sample needed to create an e-commerce site using PHP and MySQL, including creating the database, creating the public and administrative pages, and managing the shopping cart.
Create and manage an online shopping cart for your e-commerce site.
What are the Prerequisites? Objectives Describe how arguments and PHP functions relate to the database Differentiate between simple and complex functions depending on execution results Understand the importance of associative and indexed arrays. Modify specific scripts to allow for secure data transmission Update database records using PHP scripts Time: 2 hour s PHP and MySQL: 9 Developing Web Applications Description This section provides the learner with information about a number of independent topics that are present in more sophisticated Web applications.
Objectives Prevent forms from being submitted multiple times Validate form data Define patterns and both match and replace them Manage database encryption and decryption techniques Time: 4 hour s PHP and MySQL Extended Topics Description This section covers extended PHP topics that are worth considering in your development work, but not related to every Web application. Objectives Handle user registration Activate accounts Create login and logout scripts Apply password management Time: 3 hour s PHP and MySQL E-Commerce Example Description After taking this section, the learner will have the information and sample needed to create an e-commerce site using PHP and MySQL, including creating the database, creating the public and administrative pages, and managing the shopping cart.
Objectives Create a database for an e-commerce site Create the administrative pages for an e-commerce site Create pages for a customer to browse the inventory and place orders from an e-commerce site Create and manage an online shopping cart for your e-commerce site. You can set global environment variables by adding them to your Homestead.
After updating the Homestead.
Build a CMS in an Afternoon with PHP and MySQL
Laravel provides a convenient way to schedule Cron jobs by scheduling a single schedule:run Artisan command to be run every minute. If you would like the schedule:run command to be run for a Homestead site, you may set the schedule option to true when defining the site:. Mailhog allows you to easily catch your outgoing email and examine it without actually sending the mail to its recipients.
To get started, update your. To install Minio, update your Homestead. By default, Minio is available on port The default access key is homestead , while the default secret key is secretkey. When accessing Minio, you should always use region us-east Supported policy values include: none , download , upload , and public. If you wish, you may forward additional ports to the Vagrant box, as well as specify their protocol:. Sometimes you may wish to share what you're currently working on with coworkers or a client.
Vagrant has a built-in way to support this via vagrant share ; however, this will not work if you have multiple sites configured in your Homestead. To solve this problem, Homestead includes its own share command. To get started, SSH into your Homestead machine via vagrant ssh and run share homestead. This will share the homestead. You may substitute any of your other configured sites for homestead. After running the command, you will see an Ngrok screen appear which contains the activity log and the publicly accessible URLs for the shared site.
If you would like to specify a custom region, subdomain, or other Ngrok runtime option, you may add them to your share command:. Homestead 6 introduced support for multiple versions of PHP on the same virtual machine. You may specify which version of PHP to use for a given site within your Homestead. The available PHP versions are: "5. You may also update the default CLI version by issuing the following commands from within your Homestead virtual machine:.
Homestead uses the Nginx web server by default. However, it can install Apache if apache is specified as a site type. While both web servers can be installed at the same time, they cannot both be running at the same time. The flip shell command is available to ease the process of switching between web servers. The flip command automatically determines which web server is running, shuts it off, and then starts the other server.
To use this command, SSH into your Homestead machine and run the command in your terminal:. Homestead includes the Postfix mail transfer agent, which is listening on port by default. So, you may instruct your application to use the smtp mail driver on localhost port Then, all sent mail will be handled by Postfix and caught by Mailhog.
Homestead includes support for step debugging using Xdebug. For example, you can load a web page from a browser, and PHP will connect to your IDE to allow inspection and modification of the running code. By default Xdebug is already running and ready to accept connections. If you need to enable Xdebug on the CLI run the sudo phpenmod xdebug command within your Vagrant box.
Next, follow your IDE's instructions to enable debugging. Finally, configure your browser to trigger Xdebug with an extension or bookmarklet. When debugging functional tests that make requests to the web server, it is easier to autostart debugging rather than modifying tests to pass through a custom header or cookie to trigger debugging.
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Blackfire is a SaaS service for profiling web requests and CLI applications and writing performance assertions. It offers an interactive user interface which displays profile data in call-graphs and timelines. It is built for use in development, staging, and production, with no overhead for end users. It provides performance, quality, and security checks on code and php. The Blackfire Player is an open-source Web Crawling, Web Testing and Web Scraping application which can work jointly with Blackfire in order to script profiling scenarios. Blackfire server credentials and client credentials require a user account.
Blackfire offers various options to profile an application, including a CLI tool and browser extension. Please review the Blackfire documentation for more details. To enable XHGui, add xhgui: 'true' to your site configuration:. If the site already exists, make sure to run vagrant provision after updating your configuration. XHGui will automatically attach a cookie to the response so that subsequent requests do not need the query string value.
Note that the act of profiling slows down script execution, and absolute times may be as much as twice as real-world requests. Therefore, always compare percentage improvements and not absolute numbers. Also, be aware the execution time includes any time spent paused in a debugger. Since performance profiles take up significant disk space, they are deleted automatically after a few days.
- 1. Resource bottlenecks (I/O, Memory, CPU).
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The networks property of the Homestead.