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PHP PHP Arrays and Control Structures PHP Loops For Looping

Hugo Zaanen
Hugo Zaanen
11,897 Points
Posted by Hugo Zaanen
Hugo Zaanen
11,897 Points

isset

Hi, i am stuck on this assignment and i can't get figure it out, it doesn't seem to work, and as far as i am reading through isset i am doing this the right way isset($facts[$i]) , should return true when the key corresponds with the key in the array.

Well, i hope you can see my error.

thank you

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;$i <= 100;$i++){
  if(isset($facts[$i]) == $i){
    echo $i . " " . $facts[$i];
  }
}
Ashish Mehra
Ashish Mehra
3,407 Points

Hey Hugo Zaanen ,

echo $i outside of loop

for($i = 1;$i <= 100;$i++){
    echo $i;
    if(isset($facts[$i])){
        echo $facts[$i];
    }
}
Benjamin Payne
Benjamin Payne
8,142 Points
Benjamin Payne
Benjamin Payne
8,142 Points

I don't think you need the == $i in the if statement.

2 Answers

Antonio De Rose
Antonio De Rose
20,885 Points
Antonio De Rose
Antonio De Rose
20,885 Points

I ran through your code, and am perfectly, getting an output, what are you exactly trying to achieve, the below is what I got as an output.

2 is the approximate hours a day Giraffes sleeps 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. 18 is the average hours a Python sleeps per day 57 on Heinz ketchup bottles represents the number of varieties of pickles the company once had. 69 is the largest number of recorded children born to one woman 98 % of the atoms in your body are replaced every year

Ranvir Sahota
Ranvir Sahota
9,844 Points
Ranvir Sahota
Ranvir Sahota
9,844 Points

Benjamin Payne is right. Isset returns true if the element exists and false if doesn't. So let's say that is value is true you then doing this true==1. Now according to Antonio De Rose your code works but conditional statements like this can be unpredictable. Check the documentation on isset once you do I'm sure you'll like we have. Good luck and have fun!