escapeshellarg

(PHP 4 >= 4.0.3, PHP 5)

escapeshellarg — Escape a string to be used as a shell argument

Описание

string escapeshellarg ( string $arg )

escapeshellarg() adds single quotes around a string and quotes/escapes any existing single quotes allowing you to pass a string directly to a shell function and having it be treated as a single safe argument. This function should be used to escape individual arguments to shell functions coming from user input. The shell functions include exec(), system() and the backtick operator.

Список параметров

arg: The argument that will be escaped.

Возвращаемые значения

The escaped string.

Примеры

Пример #1 escapeshellarg() example


<?php
system('ls '.escapeshellarg($dir));
?>

Смотрите также

escapeshellcmd() - Escape shell metacharacters
exec() - Execute an external program
popen() - Открывает файловый указатель процесса
system() - Execute an external program and display the output
backtick operator