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发表于 2007-10-12 16:52:07
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- system
- (PHP 3, PHP 4, PHP 5)
- system -- Execute an external program and display the output
- 说明
- string system ( string command [, int &return_var] )
- system() is just like the C version of the function in that it executes the given command and outputs the result.
- The system() call also tries to automatically flush the web server's output buffer after each line of output if PHP is running as a server module.
- If you need to execute a command and have all the data from the command passed directly back without any interference, use the passthru() function.
- 参数
- command
- The command that will be executed.
- return_var
- If the return_var argument is present, then the return status of the executed command will be written to this variable.
- 返回值
- Returns the last line of the command output on success, and FALSE on failure.
复制代码
system 返回的是 stdout 的字符,所以:
[PHP]
echo system("ls");
[/PHP] |
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