Need help with code challenge task 2 of 2: For looping in PHP Arrays and Control Structures

i didnt like the way the text was outputted after the numbers so i changed to this. i added if $facts is not set then add a break. much cleaner

<?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; $i++){
    echo $i;
    if(!isset($facts[$i])) {
        echo "<br />\n";
    }
    if(isset($facts[$i])){
        echo $facts[$i] . "<br />\n";
    }
}
?>

hi,

please write the task text too beacuse i don't understand now :) i'd do with foreach when i want to print array.

Don't understand how $i can become a key of an $facts array - $facts[$i]- I solved 2part only because I simply copy paste from here because i would never figure out on my own that $i should be written as a key to $facts and that I shouldn't specify a key for each case when I need to echo the sentence. I was trying many variations like - if(isset($facts) && ($i == 57)) {echo $facts[57];} and other variations which I guess is very stupid and of course it did not work. But I just want to understand which part of leraning so far i missed. So far i have re-watched every video like 3 times for the whole course and I still could not figure out this on my own

I found that this best outputs the desired results.

<?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',
);


for ($i = 0; ++$i <= 100;) {
  echo $i;
  if (isset($facts[$i])) {
    echo $facts[$i] . "\n";
  } if (!isset($facts[$i])) {
    echo "\n";
  }
}

Tidiest way I have found.

<?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; $i++) {
  echo $i;
  if(isset($facts[$i])){   
      echo $facts[$i] . "<br />\n";
  } else {
    echo "<br />\n";
  }
}
?>

Oops sorry about that. The task text is the following:

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.

Hi Rohit,

The extra spaces that you're echoing before and after the fact might be throwing off the challenge tester.

Try to echo the fact only.

echo $facts[$i];

<?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; $i++) {
  echo $i;
  if(isset($facts[$i])) {
    echo  $facts[$i] ;  
  }
}
?>

This does not work for me, tried a lot of other variations and nothing. Any help?

OK that is just odd I tested this, it does work now

In the for loop you are setting i as a variable $i=1 and the the $i <=100 is saying you only want it to go to 100 when you are adding 1 each time with the i++.

  if(isset($facts[$i])) {
    echo  $facts[$i] ;  
//starts $i=1
  }
  if(isset($facts[$i])) {
    echo  $facts[$i] ;  
//then $i=2
  }
  if(isset($facts[$i])) {
    echo  $facts[$i] ;  
//then $i=3
  }
  if(isset($facts[$i])) {
    echo  $facts[$i] ;  
//then $i=4
  }

etc. until it $i=100 then the for loop ends and goes on the next actions in your php file.

<?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; $i++ ){

echo $i;

if(isset($facts[$i])){

echo $facts[$i];

}

echo "<br />\n";

}

<?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; $i++ ){ echo $i; if(isset($facts[$i])){ echo $facts[$i]; } echo "<br />\n"; }

The question was wrong. Try the code below. It should work

<?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; $i < 101; ++$i ){ echo $i . "\n";

if(isset($facts[$i])){ echo $facts[$i]; } echo "<br />\n"; }

?>

hey guys i did it this way and it still works

for ($i = 2; $i < 99; $i++) { if(isset($facts)){ echo "$facts[$i]" ; }

do you need to add [$i] in the if statement ?

I found a ternary useful for this challenge.

for ($count = 1; $count <= 100; $count ++) {
  echo $count . (isset($facts[$count]) ? $facts[$count] : NULL) . "\n";
}