Efficient Large String Parsing in PHP with Fibers

Parse large strings efficiently in PHP using Fibers. Learn chunk-based processing with non-blocking execution and progress tracking.

PHP Code Editor

<?php
echo '<pre>';
// Simulated large string
$largeString = str_repeat("PHP is awesome! ", 100000); // 1.5 MB string
// Fiber to process chunks of the string
function parseStringFiber(string $string, int $chunkSize): Fiber {
return new Fiber(function () use ($string, $chunkSize) {
$length = strlen($string);
$parsedData = [];
for ($i = 0; $i < $length; $i += $chunkSize) {
$chunk = substr($string, $i, $chunkSize);
echo "Processing chunk: " . substr($chunk, 0, 20) . "...\n";
// Simulate some processing
$parsedData[] = strtoupper($chunk);
// Pause execution to allow cooperative multitasking
Fiber::suspend($i + $chunkSize);
}
return $parsedData;
});
}
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
PHP Version

Execution Result

Ready to execute

Click the "Run Script" button to see the output here

Description

This guide demonstrates how to parse large strings in PHP using Fibers for non-blocking, efficient processing. By dividing the string into manageable chunks and using cooperative multitasking, you can process large amounts of data without blocking the main execution flow.

Features of This Approach:
  • Chunk-Based Parsing: The large string is split into smaller chunks to process in memory-efficient sections.
  • Non-Blocking Execution: Using Fibers allows you to pause and resume processing, making it easy to manage long-running tasks while allowing other operations to run concurrently.
  • Progress Tracking: Output the progress of string parsing, keeping track of how much data has been processed.
  • Efficient Memory Usage: By processing chunks incrementally, memory usage remains low even for large strings.
Use Cases:
  • Large File Processing: Suitable for processing large files or datasets in chunks without consuming excessive memory.
  • Asynchronous Parsing: Use Fibers to handle asynchronous operations like logging, updating progress, or performing other tasks while parsing the string.
  • Data Transformation: Transform data (e.g., converting text to uppercase, applying regex) without blocking your application.
Code Explanation:

The script divides a large string into chunks of a specified size and processes them one at a time. It uses Fiber::suspend() to pause execution after processing each chunk, allowing other operations to run concurrently. The processed data is returned at the end, providing an efficient way to handle large data sets without blocking the application.

This approach is ideal for scenarios requiring large string or file parsing while maintaining responsive applications.

Comments

Ctrl + Enter to send

No comments yet

Be the first to share your thoughts!