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# How to use isset to return both key and value

I created an \$i that counts from 1–100 and currently when I check the preview it does seem to try to validate using isset but I'm unsure how to make it echo both the key and the value all the way up to 100. I'd love a nudge in the right direction to understand how to combine the conditional statement, isset and for loop

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',
);

for (\$i = 1; \$i <= 100; \$i++) {
if (isset(\$facts[\$i])){
echo \$facts;
} else {
echo \$i . "\n";
}
}
```

```for (\$i = 1; \$i <= 100; \$i++) {