PHP ��U
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# shell_exec

(PHP 4, PHP 5)

shell_exec -- Execute command via shell and return the complete output as a string

## Description

string shell_exec ( string cmd )

This function is identical to the backtick operator.

## Parameters

cmd

  The command that will be executed.

## Return Values

The output from the executed command.

## �d��

範例 1. A shell_exec() example
`<?php $output = shell_exec('ls -lart'); echo "<pre>$output</pre>"; ?>`

## Notes

> 注: �o�Ө�Ʀb�w��Ҧ��S�@�ΡC

## �Ѧ�

exec()
escapeshellcmd()

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