How can PHP code be optimized and streamlined for better performance?

To optimize and streamline PHP code for better performance, you can: 1. Minimize the use of loops and nested loops to reduce processing time. 2. Cache data whenever possible to avoid repetitive database queries. 3. Use built-in functions and libraries instead of writing custom code for common tasks. Example: 

// Instead of using nested loops, consider using array functions like array_map
$numbers = [1, 2, 3, 4, 5];
$squaredNumbers = array_map(function($num) {
    return $num * $num;
}, $numbers);

// Cache database query results to reduce load
if(!($cachedData = apc_fetch('cached_data'))) {
    $data = fetchDataFromDatabase();
    apc_store('cached_data', $data, 3600); // Cache for 1 hour
} else {
    $data = $cachedData;
}

// Use built-in functions for common tasks
$trimmedString = trim($longString);

Keywords

PHP optimization performance caching profiling

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