PHP line break

/**************** By Jiangong sun ******************* ***/

\ T horizontal Tab

\ ", \ ', \ Special characters

\ N is a line feed, linefeed in English, and 0xa in ASCII code
\ R is the carriage return, carriage return in English, and ASCII code is 0xd

 

The difference between carriage return and line feed:

\ N, \ r are both ASCII codes

\ N is to move the cursor to the next line, and the horizontal position remains unchanged.

\ R press enter to move the cursor to the beginning of the line.

 

If you have used a mechanical typewriter, you will know the difference between carriage return and line feed.
WRAP is to roll the drum to one grid without changing the horizontal position.
Press enter to reset the horizontal position without rolling the drum.

 

In Windows, the carriage return line break is \ r \ n.

In Linux, the carriage return line break is \ n because \ r does not exist.

The Mac carriage return line is \ r.

 

 

<PRE> a common application of tags is to represent the source code of a computer.

Pre elements can define pre-formatted text. Text enclosed in the PRE element usually contains spaces and line breaks. The text is also displayed as an equal-width font.

 

Nl2br is used to convert/N to <br>

 

<? PHP
Echo "<PRE> Hello \ nworld </PRE> ";
Echo "<br/> ";
Echo nl2br ("Hello \ rword2 ");
Echo "<br/> ";
Echo "Hello \ tword3 ";
Echo "<br/> ";
Echo "Hello \ world4 ";
Echo "<br/> ";
Echo "This spans \ nmultiple lines. The newlines will be \ noutput as well .";
Echo "<br/> ";
?>