In php cli mode, you can use $argc and $argv to read all parameters and numbers, such as:

ghostwu@ghostwu:~/php/php1/1$ cat go1
#!/usr/bin/php
<?php

    echo 'Number of parameters:' . $argc . PHP_EOL;
    echo 'Printing parameters:' . PHP_EOL;
    print_r( $argv ) . PHP_EOL;

Add executable permissions to the file:

ghostwu@ghostwu:~/php/php1/1$ ls -l
total 8
-rwxrwxr-x 1 ghostwu ghostwu 337 4 month  22 09:15 go
-rw-rw-r-- 1 ghostwu ghostwu 126 4 month  22 09:20 go1
ghostwu@ghostwu:~/php/php1/1$ chmod a+x go1
ghostwu@ghostwu:~/php/php1/1$ ls -l
total 8
-rwxrwxr-x 1 ghostwu ghostwu 337 4 month  22 09:15 go
-rwxrwxr-x 1 ghostwu ghostwu 126 4 month  22 09:20 go1
ghostwu@ghostwu:~/php/php1/1$ ./go1
//Number of parameters:1
//Print parameters:
Array
(
    [0] => ./go1
)
ghostwu@ghostwu:~/php/php1/1$ ./go1 a b c
//Number of parameters:4
//Print parameters:
Array
(
    [0] => ./go1
    [1] => a
    [2] => b
    [3] => c
)

If you want to execute go1 in any directory of the operating system, we need to add environment variables. I will create a directory mybin under the home directory to put the commands developed by myself

ghostwu@ghostwu:~/mybin$ tail -2 ~/.bashrc
fi
export PATH=~/mybin:$PATH
ghostwu@ghostwu:~/mybin$ pwd
/home/ghostwu/mybin
ghostwu@ghostwu:~/mybin$ 

ghostwu@ghostwu:~/mybin$ echo $PATH
/home/ghostwu/mybin:/home/ghostwu/bin:/home/ghostwu/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
ghostwu@ghostwu:~/mybin$ 

Print $PATH again, and it has been added. At this time, copy the developed command to ~ / mybin directory. In the future, go1 can be executed in any directory of the system

ghostwu@ghostwu:~/mybin$ cp ~/php/php1/1/go1 .
ghostwu@ghostwu:~/mybin$ ls -l
total 8
-rwxrwxr-x 1 ghostwu ghostwu 126 4 month  22 09:44 go1

ghostwu@ghostwu:~/mybin$ go1
Number of parameters: 1
Print parameters:
Array
(
    [0] => /home/ghostwu/mybin/go1
)
ghostwu@ghostwu:~/mybin$ cd /
ghostwu@ghostwu:/$ go1
Number of parameters: 1
Print parameters:
Array
(
    [0] => /home/ghostwu/mybin/go1
)
ghostwu@ghostwu:/$ cd /tmp
ghostwu@ghostwu:/tmp$ go1
Number of parameters: 1
Print parameters:
Array
(
    [0] => /home/ghostwu/mybin/go1
)

Under the Linux command line, many commands, or software, have a - v parameter to display the version number. How to do this function?

$res = '';
if( $argc >= 2 ) $argv[1] == '-v' && $res = 'go version is 1.0';
    echo $res . PHP_EOL;

Isn't it easy? Three lines of code will do it

ghostwu@ghostwu:~/mybin$ go -v
go version is 1.0
ghostwu@ghostwu:~/mybin$ ls -l
total 8
-rwxrwxr-x 1 ghostwu ghostwu 336 4 month  22 09:49 go
-rwxrwxr-x 1 ghostwu ghostwu 126 4 month  22 09:44 go1
ghostwu@ghostwu:~/mybin$