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# LXXXIII. POSIX Functions

# Introdução

This module contains an interface to those functions defined in the IEEE 1003.1 (POSIX.1) standards document which are not accessible through other means. POSIX.1 for example defined the open(), read(), write() and close() functions, too, which traditionally have been part of PHP 3 for a long time. Some more system specific functions have not been available before, though, and this module tries to remedy this by providing easy access to these functions.

Atenção
Sensitive data can be retrieved with the POSIX functions, e.g. posix_getpwnam() and friends. None of the POSIX function perform any kind of access checking when safe mode is enabled. It's therefore strongly advised to disable the POSIX extension at all (use `--disable-posix` in your configure line) if you're operating in such an environment.

> Nota: Esta extensão não está disponível na plataforma Windows.

# Instalação

POSIX functions are enabled by default. You can disable POSIX-like functions with `--disable-posix`.

# Veja Também

The section about Process Control Functions maybe of interest for you.

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