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PHP PHP Arrays and Control Structures PHP Loops For Looping

How do i display only the $i variable that fits into $facts?

In my studies, I've failed to grasp how I'd, in this challenge, proper display all numbers in the "for loop" while displaying the number following after the numbers fitting the facts array. Could someone help me and explain it in code? i had tried useing an if statement. but it dosen't seem to have given the desired result.

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 = 0; $i++ < 100; print $i){
if($i == isset($facts)){
  print $i; 
}
}

1 Answer

Algirdas Lalys
Algirdas Lalys
9,389 Points

Hi Ole Vølund Skov Mortensen

<?php
// The challenge asks us to display numbers from 1 to 100
// so in for loop our $i will begin from 1 and unitill less than or equal to 100 which means 100 will be included
for($i = 1; $i <= 100; $i++) {
  // We Display our number to the screen
  echo $i;
  // We check if current element isset() in the array, if its then we display it.
  // For example when our for loop goes at number 10 it check if there is something in an array at index 10, isset($facts[10]) and if its then it displays it to the screen. And then it checks 11, 12, 13 an so on untill 101
  if(isset($facts[$i])) {
    // We display fact to the screen
    echo $facts[$i];
  }
  // Just for easier reading (breakline), when we press 'preview' in the challenge
  echo "<br>";
}
?>

I hope it helps:)