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PHP PHP Arrays and Control Structures PHP Loops For Looping

Cliff Jackson
Cliff Jackson
2,887 Points

Code challenge question not covered in any videos prior.

On this challenge it asks you to use the isset funtion which has not been covered at all in the videos leading up to this...can anyone help?

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 < 101; $i++) {
    echo $i;

}

2 Answers

Jeff Wilton
Jeff Wilton
16,633 Points

Well, they do provide a link to the documentation for that isset function (http://php.net/manual/en/function.isset.php) but here is what it looks like in action:

for ($i = 1; $i < 101; $i++) {
    echo $i;
    if (isset($facts[$i])) {
      echo $facts[$i];
    }
}
Cliff Jackson
Cliff Jackson
2,887 Points

Thanks Jeff, in all the topics covered so far this is the first time there has been no example of the function demonstrated so i had no idea how to output the conditional correctly. I could see the if statement used but would not of known how to do the ($facts[$i])) correctly followed by the echo $facts[$i];

I have enjoyed the PHP course up to now but finding it very hard to follow the instructor now.