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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2018, Michael Weimann (<mail@michael-weimann.eu>)
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC;
/**
* Helper class that covers memory info.
*/
class MemoryInfo {
const RECOMMENDED_MEMORY_LIMIT = 512 * 1024 * 1024;
/**
* Tests if the memory limit is greater or equal the recommended value.
*
* @return bool
*/
public function isMemoryLimitSufficient(): bool {
$memoryLimit = $this->getMemoryLimit();
return $memoryLimit === -1 || $memoryLimit >= self::RECOMMENDED_MEMORY_LIMIT;
}
/**
* Returns the php memory limit.
*
* @return int The memory limit in bytes.
*/
public function getMemoryLimit(): int {
$iniValue = trim(ini_get('memory_limit'));
if ($iniValue === '-1') {
return -1;
} else if (is_numeric($iniValue) === true) {
return (int)$iniValue;
} else {
return $this->memoryLimitToBytes($iniValue);
}
}
/**
* Converts the ini memory limit to bytes.
*
* @param string $memoryLimit The "memory_limit" ini value
* @return int
*/
private function memoryLimitToBytes(string $memoryLimit): int {
$last = strtolower(substr($memoryLimit, -1));
$memoryLimit = (int)substr($memoryLimit, 0, -1);
// intended fall trough
switch($last) {
case 'g':
$memoryLimit *= 1024;
case 'm':
$memoryLimit *= 1024;
case 'k':
$memoryLimit *= 1024;
}
return $memoryLimit;
}
}