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I checked the isset documentation. im drawing a blank..

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++ ){
echo \$i;

bool (isset(\$i == [\$facts])){
echo \$facts;
}

}
```

to pass the challenge the loop will need to be displayed as so:

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

The problem is that the keys of the array are in a different range. I suggest updating the keys and the solution looks like this.

```\$factsWithNewKeys = array_values(\$facts);

for (\$i = 0; \$i < count(\$factsWithNewKeys); \$i++) {
echo(\$factsWithNewKeys[\$i]);
}
```