• Intepreter Directive
• #!/usr/bin/php
• #!/usr/bin/env php
• File should be Executable

• proc_*   : php.net/manual/en/function.proc-open.php
• Superb, for long running external commands, where we can (are) parsing the output in real time.

1. Size in columns : "tput cols"
2. Size in rows : "tput lines"
3. Supported Number of colors : "tput colors"

1. Standard Output
2. Standard Error
3. Standard Input

                            echo "HELLO WORLD";
                    php://output in not standard out
                   *** fwrite(STDOUT , 'Hello World!'); ***

 #!/usr/bin/php<?phpfwrite(STDERR , "Are you sure (y/n) : ");if(fread(STDIN , 1) == 'y') {     fwrite (STDOUT , 'Super awesome..!');} else {     fwrite (STDOUT , 'This is Lame!');}fwrite (STDOUT , PHP_EOL);

• Global $argv
• First argument is always the executed script
• Good for small scripts, if you want to pass on some 

       #!/usr/bin/php       <?php        $arguments = $argv;        print_r($arguments);        fwrite (STDOUT , PHP_EOL);

• PHAR for redistribution
• PHP-CLI.com