While loop returning duplicate result in php - php

Question

I am working with a JSON file that is nested and I am employing a JSON pull parser for PHP 7 due to the size of the file. I want to extract data and put them in a csv table as thus:
`FOO ID` `NAME` `UHC` `UHCCOMPANY`
`foo_1403039` `bana` `nege`
`foo_1403039` `baan`
`foo_13589` `anab` `neeg` `nege`
`foo_13590` `naab`
`foo_1403220` `suresh ltd`
`foo_1403223` `suresh ltd`
But then if you notice in the table above, the 1st and 2nd data (foo_1403039) under the first column titled FOO ID are duplicated, and I do not want that. Indeed, if I delete the 1st data under the first column, and shift the cell of that column up by one step, the table looks perfect. Similarly, the last two data (suresh ltd) under the under the second column titled NAME are also duplicate.
I do not know what is wrong in my code. Any help will be appreciated. Here is my dummy json file, and this is my php code:
<?php
require_once 'C:/xampp/htdocs/vendor/autoload.php';
use \pcrov\JsonReader\JsonReader;
ini_set("max_execution_time", 0);
$reader = new JsonReader();
$reader->open("myjsonfile.json");
$fo = fopen("mycsv.csv", "w" );
fputs($fo, "companyID1, name, ultimateHoldingCompany, uhcCountry".PHP_EOL);
while($reader->read()) {
if (preg_match('/^foo_/', $reader->name())){
$companyID = $reader->name();
$companyID1 = str_ireplace("foo_","",$companyID);
if ($reader->read("entityName")){
$entityName = $reader->value();
$entityName = str_ireplace(","," ",$entityName);
}
if ($reader->read("ultimateHoldingCompany")){
$uhcName = null;
$uhcCountry = null;
$ultimateHoldingCompany = $reader->value();
if (empty($ultimateHoldingCompany)){
}
else {
$uhcCountry = $ultimateHoldingCompany[0]['country'];
$uhcName = $ultimateHoldingCompany[0]['name'];
$uhcName = str_ireplace(","," ",$uhcName);
}
}
fputs($fo, $companyID1.",".$entityName.",".$uhcName.",".$uhcCountry.PHP_EOL);
}
}
$reader->close();