Руководство по PHP
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# XXXIII. File Alteration Monitor Functions

# Введение

FAM monitors files and directories, notifying interested applications of changes. More information about FAM is available at http://oss.sgi.com/projects/fam/.

A PHP script may specify a list of files for FAM to monitor using the functions provided by this extension.

The FAM process is started when the first connection from any application to it is opened. It exits after all connections to it have been closed.

> Замечание: Для Windows-платформ это расширение недоступно.

# Требования

This extension uses the functions of the FAM library, developed by SGI. Therefore you have to download and install the FAM library.

# Установка

To use PHP's FAM support you must compile PHP --with-fam[=DIR] where DIR is the location of the directory containing the lib and include directories.

# Настройка во время выполнения

Данное расширение не определяет никакие директивы конфигурации в `php.ini`.

# Типы ресурсов

## FAM resource

# Предопределенные константы

Перечисленные ниже константы определены данным расширением и могут быть доступны только в том случае, если PHP был собран с поддержкой этого расширения или же в том случае, если данное расширение подгружается во время выполнения.

Таблица 1. FAM event constants

Constant | Description
--- | ---
`FAMChanged` (integer) | Some value which can be obtained with fstat(1) changed for a file or directory.
`FAMDeleted` (integer) | A file or directory was deleted or renamed.
`FAMStartExecuting` (integer) | An executable file started executing.
`FAMStopExecuting` (integer) | An executable file that was running finished.
`FAMCreated` (integer) | A file was created in a directory.
`FAMMoved` (integer) | This event never occurs.
`FAMAcknowledge` (integer) | An event in response to fam_cancel_monitor().
`FAMExists` (integer) | An event upon request to monitor a file or directory. When a directory is monitored, an event for that directory and every file contained in that directory is issued.
`FAMEndExist` (integer) | Event after the last FAMEExists event.

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read_exif_data | Уровень выше | fam_cancel_monitor