Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

PHP PHP Arrays and Control Structures PHP Loops For Looping

Philipp Norris
PLUS
Philipp Norris
Courses Plus Student 886 Points
Posted by Philipp Norris
Philipp Norris
Courses Plus Student 886 Points

Whats wrong

My code works great on localhost, but not on course code editor. Whats could be wrong?

TASK: Use the function isset to test if the incremented value equals one of the keys in the $facts array. If there is a key that matches, display the value AFTER the number.

NOTE: all numbers between 1 and 100 should still be displayed

index.php 
<?php $facts = array(
    57 => ' on Heinz ketchup bottles represents the number of varieties of pickles the company once had.',
    2 => ' is the approximate hours a day Giraffes sleeps',
    18 => ' is the average hours a Python sleeps per day',
    10 => ' per cent of the world is left-handed.',
    11 => ' Empire State Buildings, stacked one on top of the other, would be required to measure the Gulf of Mexico at its deepest point.',
    98 => '% of the atoms in your body are replaced every year',
    69 => ' is the largest number of recorded children born to one woman',
);
//add your loop below this line
for ($i=1; $i <=100 || isset($facts[$i]) ; $i++) {
    echo $i . $facts[$i] .  "<br />\n" ;
}

1 Answer

Connor Walker
Connor Walker
17,985 Points

The problem is you need to be using an if statement inside your for loop to check if the value of that index in the array is set, like this:

<?php
for ($i=1; $i <=100; $i++) {
  echo $i; 
  if(isset($facts[$i])){
    echo $facts[$i]; 
  }
}