如何在html textarea POST数据中保留换行符

Question

I am trying to have lyrics to a song submitted into a text area. So, this needs to keep the line-breaks when I output. I am aware of the fact that browsers standard should use as the line-break, and PHP's nl2br() function can convert the into <br>tags.

I am also aware of the fact that textarea inputs require wrap="hard" in order to pass the line-breaks, otherwise the default of wrap="soft" will ignore, and that cols="" must be specified when using wrap="hard". I have attempted to accomplish this with the html below:

<textarea wrap="hard" name="reading_text" cols="450" rows="6" maxlength="5000"></textarea>

However, the POST array does not show any line breaks. I enter this into the textarea:

Line one of the lyrics

That were entered into the textarea

Alas to my dismay

Red eyes and fire and signs

Because the line-breaks are not in the POST data

I want to make a ray of sunshine and never leave home

I get this in the POST array:

array(5) { ["reading_text"]=> string(216) "Line one of the lyrics That were entered into the textarea Alas to my dismay Red eyes and fire and signs Because the line-breaks are not in the POST data" ["add_reading"]=> string(3) "Add" }

To make matters more confusing for me I tried to look at W3 Schools demo (https://www.w3schools.com/tags/tryit.asp?filename=tryhtml5_textarea_wrap). However, I cannot seem to even make that example work. When I enter many line breaks into the textarea, the text comes out with no .

What am I missing here?

Answer 1

You could pass the textarea text as part of the querystring. This will force the entire string to be url encoded like this:

%0AGray%2C%20quiet%20and%20tired%20and%20mean%0A%0APicking%20at%20a%20worried%20seam%0A%0AI%20try%20to%20make%20you%20mad%20at%20me%20over%20the%20phone.%0A%0ARed%20eyes%20and%20fire%20and%20signs%0A%0AI%27m%20taken%20by%20a%20nursery%20rhyme%0A%0AI%20want%20to%20make%20a%20ray%20of%20sunshine%20and%20never%20leave%20home%0A

then just decode the string on the receiving page with urldecode(). This should keep the formatting and display it correctly.

http://php.net/manual/en/function.urldecode.php

https://www.tools4noobs.com/online_php_functions/urldecode/

I suppose you could just also urlencode() the textarea text before POSTING and urldecode it on the other end.