For this tutorial, you can use MySQL straight from the terminal, but if you'd prefer a MySQL GUI, check out Sequel Pro for Mac or HeidiSQL for Windows. If you are using a Mac, I recommend following these instructions. Navigate to the MySQL website and install the community server edition. Note: You'll need MySQL for this tutorial. Composer is needed to install Lumen's dependencies. Composer: Navigate to the Composer website and install it on your machine.Furthermore, ensure that the following PHP extensions are installed. PHP: Make sure PHP >= 7.2 is installed on your machine.To use Lumen, you need to have the following tools installed on your machine: 'Lumen is an amazing PHP micro-framework that offers a painless upgrade path to Laravel.' A unified API is provided across a variety of different queue back-ends.Įvents provide a simple observer implementation that allows you to subscribe and listen for events in your application.īootstrapping processes are located in a single file. Queuing services are similar to the ones offered by Laravel. For example, you can install the illuminate /redis package via Composer to use a Redis cache with Lumen.Įrrors and Logging are implemented via the Monolog library, which provides support for various log handlers. Cache drivers such as Database, Memcached, and Redis are supported. However, incoming requests are authenticated via stateless mechanisms such as tokens.Ĭaching is implemented the same as in Laravel. This includes basic routing, routing parameters, named routes, and route groups such as middleware.Īuthentication does not support session state. Routing is provided out of the box in Lumen. These are some of the built-in features of Lumen: As such, Lumen is built to painlessly upgrade directly to Laravel when needed for example, when you discover that you need more features out of the box than what Lumen offers.

Lumen utilizes the Illuminate components that power the Laravel framework. With Lumen, you can build lightning-fast microservices and APIs that can support your Laravel applications. Lumen is an open-source PHP micro-framework created by Taylor Otwell as an alternative to Laravel to meet the demand of lightweight installations that are faster than existing PHP micro-frameworks such as Slim and Silex. TL DR: In this tutorial, I'll show you how easy it is to build and secure an API with Lumen. 6.This post has been updated to Lumen 7.x and Auth0 PHP SDK 7.x. Hence, we used the -c option to print a summary of the system calls at the termination of strace. Note that, the strace command generates output for every system call. Additionally, we also used the -f option to attach to all its child processes. Here we used the option -p to attach to the process id (372) i.e.

% time seconds usecs/call calls errors syscall In such cases, we can use the strace command to trace the Linux system calls in progress: $ sudo strace -c -fp 372 Sometimes we may want to have a closer look at the operations performed by our processes. Hence, we’re able to realize that the script is waiting for the child processes ( sleep) to complete. We used an additional option -p to print the process ids along with the process names. In effect, prior to the execution of every command in the script, the values of variables get printed. Subsequently, we passed this echo statement to the trap command with the DEBUG signal. In this example, we specified the echo command to print the values of variables five_val, two_val, and total. Let’s illustrate this with an example: #! /bin/bash The command specified in the arguments of trap command is executed before each subsequent statement in the script. We can utilize the DEBUG trap feature of Bash to execute a command repetitively. Although, the first few lines, until FD 5 is assigned to debug output were printed. debug_logging.shĪs expected, the debug output is not written on the terminal. In effect, Bash will now write the xtrace output on FD5 i.e. Later, we assigned the FD 5 to Bash variable BASH_XTRACEFD. To achieve this, we used another special shell variable LINENO. We changed the value of the PS4 variable to display line numbers in the debug prompt. The PS4 variable defines the prompt that gets displayed when we execute a shell script in xtrace mode. Then we changed the special shell variable PS4. Let’s create another script to check it: #! /bin/bashįirst, we opened the debug.log file on File Descriptor (FD) 5 for writing using the exec command. Consequently, we could restrict the amount of output on stdout.įurthermore, we can redirect the debug information to another file and let the script output print on stdout. In the previous section, we examined how we can restrict debugging to only certain parts of the script.

Phpstorm xdebug validation script file