How do you slow down the output from a DOS / windows command prompt

I have lots of experience of writing php scripts that are run in the context of a webserver and almost no experience of writing php scripts for CLI or GUI output.

I have used the command line for linux but do not have much experience with DOS.

Lets say I have php script that is:

<?php
echo('Hello wor开发者_JS百科ld');

for ($idx = 0 ; $idx < 100 ; $idx++ )
    {
    echo 'I am line '. $idx .  PHP_EOL;
    }

Then, I run it in my DOS Command prompt:

 # php helloworld.php

Now this will spurt out the output quickly and i have to scroll the DOS command window up to see the output.

I want to see the output one 'screen full' at a time.

How do you do that from the perspective of a DOS user?

Furthermore, although this is not my main main question, I would be also interested in knowing how to make the php script 'wait for input' from the command prompt.

php helloworld.php | more

More on more.

More on command line redirection.

You can redirect the output to a text-file and refer the text-file after the command execution is completed.

C:/>dir > output.txt

In general, I'd count however many lines, then stop and wait for a user input. Perhaps with an "any key to continue" if there's a possibility of confusion.

You could also build in a time delay, but personally I hate programs that display a message for a fixed amount of time and then clear it. What if someone walks in the office and distracts me just as the message comes up? I prefer requiring a positive response.