How PHP converts BR newline characters in HTML into line breaks in text input _php tutorial

PHP has a very good function: NL2BR (), the text box to convert the line to the HTML page
, but how to implement the HTML
is the newline character converted to a line break in a text box? Here are a few ways to help you solve this problem.

The PHP version adds the HTML
Line breaks convert to newline characters in text boxes:

function Br2nl ($text) {    return preg_replace ('//I
 
  
   
  ', ' ', $text);
 }
  

Or:

function Br2nl ($text) {    $text =preg_replace ('//I
 
  
   
  ', CHR), $text), return preg_replace ('//I ', ', $ text);}
 
  

JS version will be in the HTML
Line breaks convert to newline characters in text boxes:

function br2nl (txt) {    var re=/(
 
  |
|
|
 
   )/g;    var s=txt.replace (Re, "\ n");    return s;                                  }

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