根据我的经验，我有一个最好的问题，我想通过 fwrite() 编写 .htaccess 文件，当它调试时它在文本区域中显示正常但是当我要提交它时它显示\n\r\n\r....我正在尝试 str_replace() 及其工作，但不会中断行。这是我所有的代码，请帮助我。

submit.php

<?php

//.htaccess file write and rewrite query

$file = ".htaccess";

$submit7 = $_POST['submit7'];

$edit = mysql_real_escape_string(str_replace( array("\r\n", "\n"), " ", $_POST['edit']));




function wee() {

    echo "<IfModule mod_rewrite.c> \n
\n RewriteEngine on \n";

    require('config2.php'); $getquery=mysql_query("SELECT * FROM menu ORDER BY menu_id DESC"); while($rows=mysql_fetch_assoc($getquery)){$menu_id=$rows['menu_id']; $linkname=$rows['linkname'];

echo "\n RewriteRule ^".$linkname."/{0,1}$  pagee.php?menu_id=".$menu_id. "[QSA,L] \n"; }

    echo "\n </IfModule>";



} 




    if ($submit7) {
    if ( is_writable( $file ) ) {
        // is_writable() not always reliable, check return value. see comments @ http://uk.php.net/is_writable
        $f = fopen( $file, 'w+');
        if ( $f !== false ) {
            fwrite( $f, $edit );
            fclose( $f );

        }
    }
}



?>





<form id="form7" name="form7" method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
      <label>
        <input type="submit" name="submit7" value="Write" />
      </label>

<textarea name="edit"><?php echo wee(); ?></textarea>



    </form>

config2.php

<?php

mysql_connect("localhost","root","");
mysql_select_db("myweb");


?>


<?php
$con = mysql_connect('localhost','root','')
or die(mysql_error());
mysql_select_db ("myweb");
?>

sql.sql

--
-- Database: `myweb`
--

-- --------------------------------------------------------

--
-- Table structure for table `menu`
--

CREATE TABLE IF NOT EXISTS `menu` (
  `menu_id` int(11) NOT NULL,
  `mname` text NOT NULL,
  `level` text NOT NULL,
  `linkname` text NOT NULL
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=latin1;

--
-- Dumping data for table `menu`
--

INSERT INTO `menu` (`menu_id`, `mname`, `level`, `linkname`) VALUES
(1, 'Home', 'home', 'aaaa'),
(2, 'Music', 'Music', 'Music'),
(3, 'Movie', 'Movie', 'Movie'),
(4, 'Song', 'Song', 'Song');

--
-- Indexes for dumped tables
--

--
-- Indexes for table `menu`
--
ALTER TABLE `menu`
  ADD PRIMARY KEY (`menu_id`);

--
-- AUTO_INCREMENT for dumped tables
--

--
-- AUTO_INCREMENT for table `menu`
--
ALTER TABLE `menu`
  MODIFY `menu_id` int(11) NOT NULL AUTO_INCREMENT,AUTO_INCREMENT=5;
/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;

.htaccess --- output result now showing

<IfModule mod_rewrite.c>  RewriteEngine on  RewriteRule ^Song/{0,1}$  pagee.php?menu_id=4[QSA,L]  RewriteRule ^Movie/{0,1}$  pagee.php?menu_id=3[QSA,L]  RewriteRule ^Music/{0,1}$  pagee.php?menu_id=2[QSA,L]  RewriteRule ^aaaa/{0,1}$  pagee.php?menu_id=1[QSA,L]  </IfModule>

But I want that like this:

<IfModule mod_rewrite.c>  

RewriteEngine on  

RewriteRule ^Song/{0,1}$  pagee.php?menu_id=4[QSA,L]
RewriteRule ^Movie/{0,1}$  pagee.php?menu_id=3[QSA,L]  
RewriteRule ^Music/{0,1}$  pagee.php?menu_id=2[QSA,L]  
RewriteRule ^aaaa/{0,1}$  pagee.php?menu_id=1[QSA,L]  

</IfModule>

请帮帮我......

最佳答案

四种解决方案:

1) 使用PHP函数nl2br()

例如

echo nl2br("This\r\nis\n\ra\nstring\r");

// will output
This<br />
is<br />
a<br />
string<br />

2) 将输入包装在 <pre></pre> 中标签。

参见: http://www.w3.org/wiki/HTML/Elements/pre

$textToStore = nl2br(htmlentities($inputText, ENT_QUOTES, 'UTF-8'));

file_put_contents('.htaccess', $_POST['textarea_value']);

file_put_contents()结合了fopen的功能, fwrite , fclose

关于php - Textarea 换行符无法正常工作，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30562025/