Quick Answer

Caused by excessive data loading or memory leaks.

Understanding the Issue

PHP scripts default to 128MB memory. Large operations require optimization or limit increases.

The Problem

This code demonstrates the issue:

Php Error 
// Problem: Loading huge file
$data = file_get_contents("multi_gb_file.log");

The Solution

Here's the corrected code:

Php Fixed 
// Solution 1: Stream processing
$handle = fopen("large_file.log", "r");
while (!feof($handle)) {
    processLine(fgets($handle));
}

// Solution 2: Temporary increase
ini_set("memory_limit", "512M");

Key Takeaways

Process data in chunks instead of loading entirely.