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psysh:tldr:12648
The command "psysh --config ${filename}" is used to run the PsySH REPL (Read-Eval-Print Loop) with a specific configuration file.
Let's break down the command and its components:
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"psysh": This is the name of the command or executable that runs the PsySH REPL, a runtime developer console for PHP. It allows you to interactively experiment with PHP code and expressions.
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"--config": This is an option flag used to specify that a configuration file will be provided. It tells PsySH that there is a file that contains specific configurations for its environment.
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"${filename}": This is a placeholder for the actual configuration file's name. The command expects you to replace "${filename}" with the name of the configuration file you want to use. For example, if your configuration file is named "psysh_config.php", you should replace "${filename}" with "psysh_config.php" in the command.
Once you execute the command, it will launch PsySH using the provided configuration file, applying the specified settings and customizations to the interactive shell session.