PHP - For each to get variable based on $i - php

Question

I'm having some doubt doing some for each loop, so i have an immense variable names ranging from $a1 - $a120
What I'm trying to do is doing a for each loop from where I can get each of thoose by using an indexing system.
$a116= "N69";
$a117= "V52";
$a118= "V53";
$a119= "V54";
$a120= "V55";
# FIM
for ($i = 0; $i <= 119; ++$i) {
$var = ${"a".$i}; // This is what i need to learn to do
$sheet->setCellValue($var, $array[$i]); // the array is other information im inserting to the file
}

Answer 1

It is not good for the loops. But you can use it, if you can not change your codes.
I just added
$var_name="a".$i;
$var = $$var_name;
And the full code is below.
$a116= "N69";
$a117= "V52";
$a118= "V53";
$a119= "V54";
$a120= "V55";
# FIM
for ($i = 0; $i <= 119; ++$i) {
$var_name="a".$i;
$var = $$var_name; // This is what i need to learn to do
$sheet->setCellValue($var, $array[$i]); // the array is other information im inserting to the file
}

Answer 2

You should update the code to use an array.
$data = [];
$data["a116"] = "N69";
$data["a117"] = "V52";
$data["a118"] = "V53";
$data["a119"] = "V54";
$data["a120"] = "V55";
Now you can use a foreach loop getting the key/value pairs
foreach($data as $key => $value){
$sheet->setCellValue($key, $value);
}