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- <?php
- namespace Drupal\Component\Utility;
- /**
- * Provides PHP environment helper methods.
- */
- class Environment {
- /**
- * Compares the memory required for an operation to the available memory.
- *
- * @param string $required
- * The memory required for the operation, expressed as a number of bytes with
- * optional SI or IEC binary unit prefix (e.g. 2, 3K, 5MB, 10G, 6GiB, 8bytes,
- * 9mbytes).
- * @param $memory_limit
- * (optional) The memory limit for the operation, expressed as a number of
- * bytes with optional SI or IEC binary unit prefix (e.g. 2, 3K, 5MB, 10G,
- * 6GiB, 8bytes, 9mbytes). If no value is passed, the current PHP
- * memory_limit will be used. Defaults to NULL.
- *
- * @return bool
- * TRUE if there is sufficient memory to allow the operation, or FALSE
- * otherwise.
- */
- public static function checkMemoryLimit($required, $memory_limit = NULL) {
- if (!isset($memory_limit)) {
- $memory_limit = ini_get('memory_limit');
- }
- // There is sufficient memory if:
- // - No memory limit is set.
- // - The memory limit is set to unlimited (-1).
- // - The memory limit is greater than or equal to the memory required for
- // the operation.
- return ((!$memory_limit) || ($memory_limit == -1) || (Bytes::toInt($memory_limit) >= Bytes::toInt($required)));
- }
- }
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