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The php language offers elaborate features. This series of articles presents some details of using those features effectively.
I’ve been working on the SQLIite Object Cache plugin for WordPress, so I’ve had to figure out a few things about using SQLite itself and php’s SQLite3 extension. Here are some notes. There are various versions of the SQLite software around. If you will run your code on multiple different hosting providers and server configurations, … Read more
I’ve been working on the SQLIite Object Cache plugin for WordPress. I’m using the APCu User Cache, php’s RAM cache subsystem, to accelerate cache lookups — specifically to support wp_cache_get() and wp_cache_get_multiple() operations. I’ve had to figure out a few things about this php feature. Here are some notes. Its documentation is not as comprehensive … Read more
php’s microtime( true ) function returns a floating point number of seconds since the UNIX epoch. On my computer each call takes about 200ns. The same is true of the time() and hrtime() functions. hrtime() is more modern and gives nanosecond resolution, so use it if possible. It’s available in php 7.3 and beyond. By … Read more
Maybe I should have known this. But I didn’t, to my detriment. Empty arrays are falsey. Like so. The rule that an empty array is falsey bit me when doing this sort of thing. Many SQL queries can return an empty result set, that is, a result set with zero rows in it. That’s a … Read more
At the request of a user I configured the Index WP MySQL For Speed plugin to use php’s composer package manager for installation. That plugin has a mu-plugins component because it sometimes needs to intervene in core and plugin updates. Ordinarily, activating it puts the the code into the mu-plugins/ directory. But some WordPress installations … Read more