<?php /** * @file * Contains \Drupal\Component\Utility\Environment. */ 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))); } }