PHP issue reading huge data from txt files - php

Question

I'm running a php script that reads from some pipe-delimited txt files, those files contain around 22,000 records. I'm using PHP file() function to read those files, BTW the files have some inter-relation too, I'm pasting the code here for better understanding
public function getGames()
{
$resource = self::DATAFILES.'Product.txt';
$games = array_slice($this->readFile($resource), 1);
$data = array();
$count = 1;
foreach($games as &$records)
{
$game = new Game();
$attributes = explode($this->delimiter,$records);
$game->api = (int) $attributes[0];
$game->console_id = (string) $attributes[1];
$game->title = (string) $this->getTitle($attributes[2]);
$game->barcode = (string) $attributes[4];
$game->image = $this->getCoverImage($attributes[0]);
$game->releateDate = strtotime($attributes[8]);
$data[] = $game;
//if($count == 100): break; else: $count++; endif;
}
print '<pre>'; print_r($data);
}
public function getTitle($titleID)
{
$resource = self::DATAFILES.'Title.txt';
$titles = array_slice($this->readFile($resource), 1);
foreach($titles as $records)
{
$attributes = explode($this->delimiter,$records);
$pattern = '/^' . preg_quote($attributes[0], '/') . '$/';
if (preg_match($pattern, $titleID))
{
return $attributes[2];
break;
}
}
}
public function getCoverImage($gameID)
{
$resource1 = self::DATAFILES.'ProductImage.txt';
$coverImages = array_slice($this->readFile($resource1), 1);
foreach($coverImages as $img_records)
{
$image_attributes = explode($this->delimiter,$img_records);
$pattern1 = '/^' . preg_quote($image_attributes[0], '/') . '$/';
$pattern2 = '/^' . preg_quote($image_attributes[3], '/') . '$/';
if (preg_match($pattern1, $gameID) && preg_match($pattern2, 'Cover'))
{
return $image_attributes[2];
break;
}
}
So the problem I'm facing here is that - when I run that script it will just go on and on nothing happens i.e never throws any error neither print the returned array, however when I limit's the loop iteration up to 100 it works which means nothing wrong with the code so I thought perhaps, php script execution time making trouble so I changed it to max_execution_time = 0 - but still not getting the results. Any help or suggestion, would love hear that.. :)
BTW I'm using Xampp Apache for my local dev !