PHP code example of koine / delayed-cache

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

koine / delayed-cache example snippets

$zendCache = $cache  = \Zend\Cache\StorageFactory::adapterFactory(
    'apc',
    array('ttl' => 3600)
);

$delayedCache = new \Koine\DelayedCache\DelayedCache($zendCache);

// index.php, second 10:00:00 am

$cacheKey = 'veryExpansiveCalculation';

$veryExpansiveCalculation = function () {
    sleep(60);

    return '42';
};

// hasItem returns true in the false time
if (!$delayedCache->hasItem($cacheKey)) {
    $delayedCache->setItem($cacheKey, $veryExpansiveCalculation);
}

$answer = $delayedCache->getItem($cacheKey);
echo 'answer is: ' . $answer;

// index.php, 10:00:10 am

$cacheKey = 'veryExpansiveCalculation';

$veryExpansiveCalculation = function () {
    sleep(60);

    return '42';
};

// although the result is not ready yet, hasItem will return true
if (!$delayedCache->hasItem($cacheKey)) {
    $delayedCache->setItem($cacheKey, $veryExpansiveCalculation);
}

// Waits 50 seconds until the building of the cache is done and then returns
// The $veryExpansiveCalculation callback will not be executed twice, unless the
// cache is cleared
$answer = $delayedCache->getItem($cacheKey);
echo 'answer is: ' . $answer;

$cacheKey = 'veryExpansiveCalculation';

$veryExpansiveCalculation = function () {
    sleep(60);

    return '42';
};

// if cache is not set, it will set and then return the cached value
$answer = $delayedCache->getCachedItem($cacheKey, $veryExpansiveCalculation);
echo 'answer is: ' . $answer;

bash
# Fixes code
./bin/php-cs-fix.sh

# outputs error
./bin/php-cs-fix.sh src true
./bin/php-cs-fix.sh test true