How can PHP scripts be optimized to reduce CPU usage and improve response times for a web server handling multiple concurrent users?

To optimize PHP scripts and reduce CPU usage, you can implement caching mechanisms to store frequently accessed data, minimize database queries, and use efficient algorithms. Additionally, you can enable opcode caching to reduce the need for PHP scripts to be recompiled on each request, thus improving response times for a web server handling multiple concurrent users. 

// Example of implementing opcode caching with OPcache
if (extension_loaded('Zend OPcache')) {
    ini_set('opcache.enable', 1);
    ini_set('opcache.enable_cli', 1);
    ini_set('opcache.memory_consumption', 128);
    ini_set('opcache.interned_strings_buffer', 8);
}

Keywords

PHP optimization CPU usage response times concurrent users

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