How can the ob_start function be used to measure the size of a cache in PHP?

To measure the size of a cache in PHP, you can use the ob_start function to capture the output buffer size before caching the data. This function allows you to start output buffering, which will store any output generated by PHP scripts before sending it to the browser. By measuring the size of the output buffer before caching the data, you can determine the size of the cache. 

ob_start();
// Cache your data here
$cacheSize = ob_get_length();
ob_end_clean();

echo "Cache size: " . $cacheSize . " bytes";

Keywords

ob_start cache size measurement PHP

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