What considerations should be taken into account before attempting to optimize code in PHP applications, especially in terms of premature optimization?

Before attempting to optimize code in PHP applications, it is important to consider the following factors: 1. Identify the bottlenecks in the code by profiling and analyzing performance metrics. 2. Prioritize optimization based on the impact on overall performance. 3. Avoid premature optimization by focusing on code readability, maintainability, and functionality first.

// Example PHP code snippet demonstrating optimization considerations
// Step 1: Profile and analyze performance metrics to identify bottlenecks
// Step 2: Prioritize optimization based on impact on overall performance
// Step 3: Focus on code readability, maintainability, and functionality first