使用$ _GET字符串传递换行符

问题描述：

I have to pass a string to a form. I want to use a mix of $_GET and $_POST in the following way:

 <?php $string="bla bla bla".$some_other_string."bla bla".$some_other_string2."
"; ?>

 <form action="this_page.php?string=<?php echo $string?>" method="post" name="name">

 </form>

Please note the in the string. When I get the $_GET("string") (or $_REQUEST("string"), it happens the following: the php parser get the as a string. So he put it into the string as I had coded: \\ and it's not the result I want. I want simply a inner in a php string.

Please can you explain me why this behaviour happens, without complaining that it's not the best way to pass a string (I suppose it isn't, but today I had an issue and I wanted to manage it by passing the string this way)?

Ps: I have to use the and not the html <br /> because I have to let php write into a file.

我必须将一个字符串传递给一个表单。我想使用$ _GET和$ _POST的混合通过以下方式： p>

 ＆lt;？php $ string =“bla bla bla”。$ some_other_string。“bla bla”。$ some_other_string2。“
”;  ？＆gt; 
 
＆lt; form action =“this_page.php？string =＆lt;？php echo $ string？＆gt;”  method =“post”name =“name”＆gt; 
 
＆lt; / form＆gt; 
  code>  pre> 
 
 请注意 
  code> 在字符串中。
当我得到 $ _ GET（“string”） code>（或 $ _ REQUEST（“string” code>）时，会发生以下情况：php解析器获取 
作为一个字符串。所以他把它放入字符串中，因为我编码： \\
  code>，这不是我想要的结果。我只想要一个内部 
  code  >在一个php字符串中。 p> 
 
 
请你解释一下为什么会发生这种情况，而不是抱怨它不是传递字符串的最佳方式（我想它不是，但今天我 有一个问题，我想通过这种方式传递字符串来管理它？？ p> 
 
 

 Ps：我必须使用 
  code>而不是html ＆lt; br /＆gt;  code>因为我必须让php写入文件。 p> 
  div>

答

Advice: You probably should think about putting this into a hidden field

Answer: But if you are going to put it into action as a GET parameter, then you need to urlencode the string:

<form action="this_page.php?string=<?php echo urlencode($string); ?>" method="post" name="name">

That way - any non-alphanumeric characters will be url safe (think about what might happen if $string contained a ? or a # or an = ).

PHP automatically decodes GET parameters when loading them into the $_GET array - so your newline should be preserved at that point.

使用$ _GET字符串传递换行符

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