The Zend_Memory component is intended to manage data in an
environment with limited memory.
Memory objects (memory containers) are generated by memory manager by request and transparently swapped/loaded when it's necessary.
For example, if creating or loading a managed object would cause the total memory usage to exceed the limit you specify, some managed objects are copied to cache storage outside of memory. In this way, the total memory used by managed objects does not exceed the limit you need to enforce.
The memory manager uses Zend_Cache backends as storage providers.
Example 605. Using Zend_Memory component
Zend_Memory::factory() instantiates the memory
manager object with specified backend options.
<?php
$backendOptions = array(
'cache_dir' => './tmp/' // Directory where to put the swapped memory blocks
);
$memoryManager = Zend_Memory::factory('File', $backendOptions);
$loadedFiles = array();
for ($count = 0; $count < 10000; $count++) {
$f = fopen($fileNames[$count], 'rb');
$data = fread($f, filesize($fileNames[$count]));
$fclose($f);
$loadedFiles[] = $memoryManager->create($data);
}
echo $loadedFiles[$index1]->value;
$loadedFiles[$index2]->value = $newValue;
$loadedFiles[$index3]->value[$charIndex] = '_';