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

Example#1 escapeshellarg() example


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

参见

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


	PHP5中文手册 Program Execution escapeshellcmd Program Execution PHP Manual escapeshellarg (PHP 4 >= 4.0.3, PHP 5) escapeshellarg — Escape a string to be used as a shell argument 说明 string escapeshellarg ( string `$arg` ) escapeshellarg() adds single quotes around a string and quotes/escapes any existing single quotes allowing you to pass a string directly to a shell function and having it be treated as a single safe argument. This function should be used to escape individual arguments to shell functions coming from user input. The shell functions include exec(), system() and the backtick operator. 参数 `arg` The argument that will be escaped. 返回值 The escaped string. 范例 Example#1 escapeshellarg() example `<?php system('ls '.escapeshellarg($dir)); ?>` 参见 escapeshellcmd() exec() popen() system() backtick operator Program Execution escapeshellcmd Program Execution PHP Manual