PHP read textarea and output line breaks to textarea

Source: Internet
Author: User
Tags foreach split

The code is as follows

$names = Preg_split ('/rn/', $_post[' textarea '));
foreach ($names as $name) {
Todo something Eg:echo $name;
}

The value is very simple, then the assignment, in the TEXTAREA output line break is not so simple

The code is as follows

$vals = Get_from_mydb ();
$tmp = ';
foreach ($vals as $val) {
$tmp. = $val. ' & #13;& #10; ';
}

"and" "is what meaning, because the question of time I don't say, I go to Baidu GG!"

  code is as follows &nbs P;

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd "> 
<meta http-equiv=" Content-type "content=" text/html; Charset=utf-8 "/> 
<title>php Gets the line-wrapping problem in the form area data </title> 
<BODY>&NBSP
<?php 
$content =empty ($_post[' content ') Null:trim ($_post[' content '); 
if (!empty ($content)) echo str_replace ("R", ' RL ', NL2BR ($content));  
echo "R". ' <br/>----------Split Line----------------------'. ' R ";  
if (!empty ($content)) echo str_replace (" n ", ' NL ', NL2BR ($content));  
echo" n ". ' <br/>----------Split Line----------------------'. ' n ";  
if (!empty ($content))Echo str_replace ("R", ' RL ', Str_replace ("n", ' NL ', NL2BR ($content));
echo "R". <br/>----------Split Line----------------------<br/> '. ' n ";  
Echo ' Hello '." n ". ' Boys! ';  
Echo ' Hello '. R ". ' Boys! '; &NBSP
? > 
<form action= "textareanl.php" method= "post" enctype= "Multipart/form-data" > 
<textarea name= "content" cols= "rows=" 6 "></TEXTAREA>&NBSP;
<br/> 
<input Type= "Submit" value= "submitted"/>&NBSP;
</form> 
</body> 

After opening in the browser, enter the form in the

:

When submitted, the results are displayed in the browser as follows:

In Notepad cocoa see the following results:

From the above results are visible:

The 1.PHP function nl2br () inserts an HTML newline character before each new line (RN) in the string:

;

2.Windows line wrapping is (RN);

3. In Notepad, R or n all have the function of line-wrapping;

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