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# Code Challenge Task # 3

Hi can someone help me solve task #3 for this challenge and explain the concept? I am confusing here.

palindromic_primes.php
```<?php
function mimic_array_sum (\$array) {
\$sum = 0;
foreach(\$array as \$arr => \$element) {
\$sum+=\$element;
}
return \$sum;
}

\$sum = mimic_array_sum (\$array);
echo \$sum;

\$palindromic_primes = array(11, 757, 16361);

?>
```

Hi Jason,

The task asks for you to create a function that can add a number of values, you've got the right idea with your code, except you don't need the => element as you're not dealing with associative arrays in this case!! If you remove that from your foreach loop and instead add the \$arr value to your \$sum variable it should work fine!! Here's an example of how the function could look:

```<?php

function mimic_array_sum(\$array) {
\$total = 0;
foreach(\$array as \$arr) { //loop through each element in the array
\$total+= \$arr; // add the element to \$total
}
return \$total;
}
?>
```

now, looking to apply it to the \$palindromic_primes array, you need to pass the array through the mimic_array_sum function in order for it to work, like so:

```<?php
\$palindromic_primes = array(11, 757, 16361);

\$sum = mimic_array_sum(\$palindromic_primes); //pass the \$palindromic_primes array through the function

echo \$sum;
?>
```

Hope this helps!!