Ajax-loader-large-white
For Loops in PHP
'For' Loop Syntax

Cool, right? Let's go through the syntax slowly, step-by-step. Here's an example that just echos the numbers 0 to 9:

<?php
for ($i = 0; $i < 10; $i++) {
    echo $i;
}
// echoes 0123456789
?>

It breaks down like this:

  1. A for loop starts with the for keyword. This tells PHP to get ready to loop!
  2. Next comes a set of parentheses (()). Inside the parentheses, we tell PHP three things, separated by semicolons (;): where to start the loop; where to end the loop; and what to do to get to the next iteration of the loop (for instance, count up by one).
  3. After the part in parentheses, the part in curly braces ({}) tells PHP what code to run for each iteration of the loop.

So the above example says: "Start looping with $i at 0, stop the loop before $i gets to 10, count up by 1 each time, and for each iteration, echo the current value of $i."

($i++ is shorthand for $i = $i + 1. You'll see this a lot!)

Instructions

Complete the for loop in the editor by replacing the ___s with the correct loop syntax. Use the example in the instructions as a guide!

?
Stuck? Get a hint! Hint
Get live, fast support from Codecademy Advisors when you get stuck. Learn more.

Make sure to replace all _s with the correct syntax! You can use the example in the instructions as a guide.

index.php
project
View Preview