phpnub2

thank you all.

Hello i am new here, and new to php too. I try to learn php from about 20 days, and i am getting stuck in something, somebody asked me to make a program that will produce the following output, i have to use a nested for loop: 1 22 333 4444 55555 ........etc The code for is: for($a=1;$a<10;$a++) { echo "<br>"; for ($b=0;$b<$a;$b++) echo $a; } I do know this is something elementary, but really i cannot understand how it works is there any saint that will comment the code and explain step by step whats happening there? Thank you.