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PHP PHP Arrays and Control Structures PHP Loops For Looping

Vehbi Oztomurcuk
Vehbi Oztomurcuk
4,283 Points
Posted by Vehbi Oztomurcuk
Vehbi Oztomurcuk
4,283 Points

i reached the task but i couldn't use isset properly...

i reached the task but i couldn't use isset properly...

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($vehbi = 0; $vehbi < 101;) {
    echo $vehbi . "\n"; 
    ++$vehbi;

if ($vehbi === 57) {
    echo $vehbi . $facts[57];
}
if ($vehbi === 2) {
    echo $vehbi . $facts[2];
} 
if ($vehbi === 18) {
    echo $vehbi . $facts[18];
} 
if ($vehbi === 10) {
    echo $vehbi . $facts[10];
} 
if ($vehbi === 11) {
    echo $vehbi . $facts[11];
} 
if ($vehbi === 98) {
    echo $vehbi . $facts[98];
} 
if ($vehbi === 69) {
    echo $vehbi . $facts[69];
} 

}

2 Answers

Daniel Hartin
Daniel Hartin
5,311 Points

Hi Vehbi,

I see what you've tried to do but isset is much easier :)

isset first checks the array and looks for a key which matches the number, if there is a key for that value it returns true, if not it returns false so you can use this inside an if statement to decide wether or not to print out anything after in a single line.

The link to the docs is here http://php.net/manual/en/function.isset.php

but if you want working code it's below....

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

}

Hope this helps

Daniel

Vehbi Oztomurcuk
Vehbi Oztomurcuk
4,283 Points
Vehbi Oztomurcuk
Vehbi Oztomurcuk
4,283 Points

thanks very much. i felt bad when i saw this after what i tried tho ^^

Daniel Hartin
Daniel Hartin
5,311 Points

I know what you mean it can be frustrating, but thats all part of the learning process, at least next time you enocunter this problem out there in the real wrold creating your own website etc it will be a breeze :)

Vehbi Oztomurcuk
Vehbi Oztomurcuk
4,283 Points
Vehbi Oztomurcuk
Vehbi Oztomurcuk
4,283 Points

i did it like this and it passed. but still not sure why did i used isset() 

<?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($vehbi = 1; $vehbi <= 100; $vehbi++) {
    echo $vehbi . "\n"; 
    isset($vehbi);

if ($vehbi === 57) {
    echo $facts[57];
}
if ($vehbi === 2) {
    echo $facts[2];
} 
if ($vehbi === 18) {
    echo $facts[18];
} 
if ($vehbi === 10) {
    echo $facts[10];
} 
if ($vehbi === 11) {
    echo $facts[11];
} 
if ($vehbi === 98) {
    echo $facts[98];
} 
if ($vehbi === 69) {
    echo $facts[69];
} 

}


          ```