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<?php |
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namespace App\Reuse\Controllers\Api; |
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trait TFileCache |
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{ |
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protected $cacheTtl = 60 * 5; |
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protected $cacheFilename = ''; |
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/** |
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* return true if cache is expired |
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* |
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* @return boolean |
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*/ |
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protected function cacheExpired(): bool |
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{ |
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$this->cacheFilename = $this->getCacheFilename(); |
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return (file_exists($this->cacheFilename) === false) |
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? true |
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: filemtime($this->cacheFilename) < (time() - $this->cacheTtl); |
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} |
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/** |
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* returns cache content |
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* |
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* @return string |
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*/ |
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protected function getCache(): string |
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{ |
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return file_get_contents($this->cacheFilename); |
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} |
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/** |
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* set cache content |
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* |
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* @param string $content |
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* @return integer |
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*/ |
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protected function setCache(string $content): int |
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{ |
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return file_put_contents( |
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$this->cacheFilename, |
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$content, |
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LOCK_EX |
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); |
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} |
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/** |
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* clear cache dir |
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* |
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* @param bool $fromRequest |
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* @return void |
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*/ |
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protected function clearCache(bool $fromRequest = false) |
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{ |
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if ($fromRequest) { |
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$filename = $this->getCacheFilename(); |
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if (is_writable($filename)) { |
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@unlink($filename); |
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} |
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} else { |
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$files = glob($this->getCachePath() . '*'); |
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$fileList = is_array($files) |
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? array_filter($files, 'is_file') |
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: []; |
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$counter = count($fileList); |
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for ($c = 0; $c < $counter; $c++) { |
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unlink($fileList[$c]); |
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} |
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} |
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} |
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/** |
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* returns cache filename from request uri |
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* |
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* @return string |
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*/ |
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protected function getCacheFilename(): string |
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{ |
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$path = $this->getCachePath(); |
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if (!file_exists($path)) { |
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mkdir($path); |
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} |
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$filename = md5($this->request->getUri()); |
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return $path . $filename; |
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} |
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/** |
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* returns cache path from request script filename |
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* |
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* @return string |
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*/ |
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protected function getCachePath(): string |
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{ |
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return dirname($this->request->getFilename()) . '/../cache/'; |
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} |
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} |
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pierre-fromager /
nymfonya
If you suppress an error, we recommend checking for the error condition explicitly: