JAVASCRIPT

execute php file from command line

php -f /path/to/your/file.php

execute function php

function functionName() {
    //code to be executed;
}
functionName();

execute script php command line

php php_file.php
// or
php php_file.php > result_file.txt // to display the result of echoes or dumps

how to execute a php script from the command line?

To execute a php script, use the PHP Command Line interface(CLI) and specify the file name of the script in the following way:
php script.php