Quick Answer

Optimize data processing with generators/chunks.

Understanding the Issue

Large datasets often exceed PHP's memory_limit. Process data incrementally or increase limits strategically.

The Problem

This code demonstrates the issue:

Php Error 
// Problem: Loading everything
$data = file_get_contents("huge_file.txt"); // 1GB file

The Solution

Here's the corrected code:

Php Fixed 
// Solution 1: Generator approach
function readLines($file) {
    $f = fopen($file, "r");
    while (!feof($f)) {
        yield trim(fgets($f));
    }
    fclose($f);
}

// Solution 2: Increase limit temporarily
ini_set("memory_limit", "512M");

Key Takeaways

Process data streams, don't load everything at once.