How important is readability versus performance when it comes to writing PHP code for efficiency, especially in scenarios where speed is crucial?

In scenarios where speed is crucial, performance should take precedence over readability when writing PHP code for efficiency. While readability is important for maintainability and understanding, optimizing for performance can significantly impact the speed of the application, especially in high-traffic or resource-intensive scenarios. 

// Example of optimizing PHP code for performance over readability
// Use bitwise operators for faster operations
$var1 = 10;
$var2 = 5;

$result = $var1 << 1; // Left shift operator for multiplying by 2
$result += $var2; // Addition for the remaining value

echo $result;

Keywords

readability performance PHP code efficiency speed

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