save_file.PHP，经测试代码如下：
/**
* 读取、编辑、保存文件
*
* @param
* @arrange (512.笔记) jb51.cc
**/
session_start();
$handle = fopen($_POST['original_file_name'],"w");
$text = $_POST['file_contents'];
if(fwrite($handle,$text) == FALSE){
$_SESSION['error'] = '<span class="redtxt">There was an error</span>';
}else{
$_SESSION['error'] = '<span class="redtxt">File edited successfully</span>';
}
fclose($handle);
header("Location: ".$_POST['page']);
/*** 来自编程之家 jb51.cc（jb51.cc） ***/@H_301_5@
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<Meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
</head>
<form action="savecontents.PHP" method="post">
<textarea name="file_contents" style="width:700px;height:600px;">
<?PHP
$fileName = "location/of/orignal/file/my_file.PHP";
$handle = fopen($fileName,"r");
while (!feof($handle)){
$text = fgets($handle);
echo $text;
}
?>
</textarea>
<input type="hidden" value=" <? echo $fileName; ?> " name="original_file_name" />
</form>
<body>
</body>
</html>
/*** 来自编程之家 jb51.cc（jb51.cc） ***/@H_301_5@