Fix interned strings buffer check if 0 free bytes

With #32902 it was meant to be avoided to recommend raising the interned strings buffer size above a quarter of the total OPcache size. This works as long as there is at least 1 byte free, but does not apply if the buffer is filled completely.

This commit switches the conditions so that the interned strings buffer size must be smaller than a quarter of the total OPcache size for the warning to be shown. That the buffer must be either filled completely or by more than 90% remains untouched.

Signed-off-by: MichaIng <micha@dietpi.com>

apps/settings/lib/Controller/CheckSetupController.php

@@ -524,11 +524,11 @@ protected function getOpcacheSetupRecommendations(): array {
 			}
 
 			if (
-				empty($status['interned_strings_usage']['free_memory']) ||
+				// Do not recommend to raise the interned strings buffer size above a quarter of the total OPcache size
+				($this->iniGetWrapper->getNumeric('opcache.interned_strings_buffer') < $this->iniGetWrapper->getNumeric('opcache.memory_consumption') / 4) &&
 				(
-					($status['interned_strings_usage']['used_memory'] / $status['interned_strings_usage']['free_memory'] > 9) &&
-					// Do not recommend to raise the interned strings buffer size above a quarter of the total OPcache size
-					($this->iniGetWrapper->getNumeric('opcache.interned_strings_buffer') < $this->iniGetWrapper->getNumeric('opcache.memory_consumption') / 4)
+					empty($status['interned_strings_usage']['free_memory']) ||
+					($status['interned_strings_usage']['used_memory'] / $status['interned_strings_usage']['free_memory'] > 9)
 				)
 			) {
 				$recommendations[] = $this->l10n->t('The OPcache interned strings buffer is nearly full. To assure that repeating strings can be effectively cached, it is recommended to apply <code>opcache.interned_strings_buffer</code> to your PHP configuration with a value higher than <code>%s</code>.', [($this->iniGetWrapper->getNumeric('opcache.interned_strings_buffer') ?: 'currently')]);