In PHP, how do I cache strings in vanilla PHP?

In PHP, you can use different methods to cache strings. One simple way is to save these strings into an array or a file, which can then be reused instead of recalculating or fetching them repeatedly. This can improve performance, especially when dealing with expensive operations or large datasets.

This example demonstrates how to cache strings in vanilla PHP using a simple file-based method.

PHP, caching, performance optimization, string caching, file-based caching


        <?php
        // Function to get the cached string
        function getCachedString($key) {
            $cacheFile = 'cache/' . md5($key) . '.txt';
            // Check if the cache file exists
            if (file_exists($cacheFile)) {
                return file_get_contents($cacheFile);
            }
            return false;
        }

        // Function to set the cached string
        function setCachedString($key, $value) {
            $cacheFile = 'cache/' . md5($key) . '.txt';
            // Save the value to a cache file
            file_put_contents($cacheFile, $value);
        }

        // Example usage
        $key = 'example_string';
        $cachedValue = getCachedString($key);

        if ($cachedValue === false) {
            // Value is not cached, generate and cache it
            $value = 'This is an example of caching a string in PHP.';
            setCachedString($key, $value);
            echo $value;
        } else {
            // Use cached value
            echo $cachedValue;
        }
        ?>

In PHP, how do I cache strings in vanilla PHP?

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In PHP, how do I cache strings in vanilla PHP?

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