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Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today. # Are we cheching ANY value of \$facts?

Task 2 of 2 asks us to, "[...] test if the incremented value equals one of the keys in the \$facts array." Does this mean ANY value within the \$facts array? If so, then I believe we should loop through the \$facts array as well.

After checking to make sure that \$facts is set, I'm unsure if I'm solving this in the way that the task wants. I think this question should be clarified a little further. I've tried to comment each logical step. What are your thoughts?

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',
);
// Create a for loop that displays each number from 1 to 100
for (\$i = 1; \$i <= 100; \$i++) {
echo \$i;
// Use isset function to check to make sure that \$facts is set
if(isset(\$facts)) {
// Loop through each value of \$facts
for (\$j = 1; \$j <= count(\$facts); \$j++) {
// Test if the incremented value \$i equals any one of the keys in the \$facts array
if (\$i = \$facts[\$j]) {
echo \$j;
}
}
}
}
}
``` Your concept is valid, it would pass the challenge after fixing two issues:

• there's a stray extra closing brace that should be removed
• the equality test operator is "==" ("=" is the assignment operator)

But you don't need a separate loop to check for the key. The "isset" function will tell you if there is a value set for the key by itself:

```<?php
// ...
for (\$i = 1; \$i <= 100; \$i++) {
echo \$i;
// Test if the incremented value \$i equals any one of the keys in the \$facts array
if (isset(\$facts[\$i])) {
echo \$facts[\$i];
}
}
```