blackfire:tldr:af93b

The command you provided is used to run the blackfire profiler on a PHP file and generate the output in JSON format.

Here is a breakdown of the command:

• blackfire: This is the command to run the blackfire profiler.
• --json: This option specifies that the output should be in JSON format. JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for machines to parse and generate.
• run: This is a command within the blackfire profiler that is used to start the profiling process.
• ${php filename-php}: This is a placeholder that refers to the name of your PHP file. You need to replace ${php filename-php} with the actual file name you want to profile. For example, if your PHP file is named my_script.php, you would replace it with my_script.php.

By executing this command with the appropriate PHP file name, the blackfire profiler will run and collect performance data about the execution of the PHP script. The profiler will then generate the output in JSON format, which can be further processed or analyzed by other tools or scripts.