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escapeshellarg

(PHP 4 >= 4.0.3, PHP 5)

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

说明

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 .

参数

arg

The argument that will be escaped.

返回值

The escaped string.

范例

例子 1. escapeshellarg() example

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

参见

escapeshellcmd()
exec()
popen()
system()
backtick operator

后退 起点 前进
Program Execution Functions 上一级 escapeshellcmd