How can PHP scripts be optimized to reduce loading times and prevent delays in page rendering?

To optimize PHP scripts and reduce loading times, you can utilize caching mechanisms, minimize database queries, and enable opcode caching. Additionally, you can optimize code by avoiding excessive loops, using efficient algorithms, and reducing the use of external libraries.

// Example of optimizing PHP script by enabling opcode caching
// Add this line to your php.ini file
opcache.enable=1