(PHP 4, PHP 5)
shell_exec — Execute command via shell and return the complete output as a string
This function is identical to the backtick operator.
The command that will be executed.
The output from the executed command.
Example #1 A shell_exec() example
<?php
$output = shell_exec('ls -lart');
echo "<pre>$output</pre>";
?>
Note:
当 PHP 运行在 安全模式 时，不能使用此函数。