<?php

/**

* Indexes content of time values for short-lived tasks with hard-coded limits.

*/

class TaskIndex {

private $taskData = []; // Array to store task data (time value => content)

private $maxTasks = 10; // Maximum number of tasks to store

private $timeWindowSeconds = 60; // Time window in seconds to consider

public function addTask($timestamp, $content) {

// Calculate the time difference from the current time

$timeDiff = time() - $timestamp;

// Check if the task is within the time window

if ($timeDiff <= $this->timeWindowSeconds) {

$this->taskData[$timestamp] = $content; // Store the task data

// Limit the number of tasks stored

if (count($this->taskData) > $this->maxTasks) {

// Remove the oldest task

reset($this->taskData); // Reset the internal pointer to the beginning

if (!empty($this->taskData)) {

unset($this->taskData[key($this->taskData)]); // Remove the oldest entry

}

}

}

}

public function getTaskContent($timestamp) {

// Retrieve the content associated with the given timestamp

return $this->taskData[$timestamp] ?? null; // Return null if not found

}

public function getIndexedTasks() {

// Return the current indexed tasks (for debugging/inspection)

return $this->taskData;

}

}

// Example usage:

$indexer = new TaskIndex();

// Simulate adding tasks at different times

$indexer->addTask(time() - 30, "Task 1");

$indexer->addTask(time() - 10, "Task 2");

$indexer->addTask(time() - 5, "Task 3");

$indexer->addTask(time() - 15, "Task 4");

$indexer->addTask(time() - 20, "Task 5");

$indexer->addTask(time() - 25, "Task 6");

$indexer->addTask(time() - 35, "Task 7");

$indexer->addTask(time() - 40, "Task 8");

$indexer->addTask(time() - 45, "Task 9");

$indexer->addTask(time() - 50, "Task 10");

$indexer->addTask(time() - 55, "Task 11"); // This will replace Task 1

// Retrieve the content of a specific task

$content = $indexer->getTaskContent(time() - 10);

echo "Content of task at time " . (time() - 10) . ": " . ($content ?? "Not found") . "\n";

// Print the indexed tasks

print_r($indexer->getIndexedTasks());

?>