New line (“\n”) in PHP is not working

问题

For some strange reason, inserting echo "\n"; and other scape sequence characters are not working for me, that's why I am just using   instead.

The images of the results of examples in books and other documentations seems just alright. I'm currently using XAMPP and already used WAMPP with the same actual result. Why is that?

Edit:

It seems that I cannot understand the concept after comparing your answers with this: PHP Linefeeds (\n) Not Working

Edit:

Sorry I didn't realized that the link above is referring to a php code writing to a file. I just wonder why I have these few php sample programs that uses \n even though it outputs in a webpage. Thanks everyone.

回答1:

When you run a PHP script in a browser, it will be rendered as HTML by default. If the books you’re using show otherwise, then either the code or the illustration is inaccurate. You can use “view source” to view what was sent to the browser and you’ll see that your line feeds are present.

<?php
echo "Line 1\nLine 2";
?>

This will render in your browser as:

Line 1 Line 2

If you need to send plain text to your browser, you can use something like:

<?php
header('Content-type: text/plain');
echo "Line 1\nLine 2";
?>

This will output:

Line 1
Line 2

PHP Linefeeds (\n) Not Working is referring to sending output to a file rather than the browser.

回答2:

You should be looking for nl2br(). This will add line breaks ( ) to your output which will be rendered by the browser; newlines are not.

回答3:

The echo "\n" is probably working, just not the way you expect it to.

That command will insert a new line character. From the sounds of it, you're using a browser to view your output. Note that if you wrote an HTML file that had a body contents that looked like:

<p>This
is
a
test </p>

The browser rendering would not include the new lines, and would instead just show "This is a test"

If you want to see the newlines, you could view source, and you'll see that the source code includes the new lines.

The rule of thumb is that if you need new lines in a browser, you need to use HTML (e.g.  ), while if you want it in plain text, you can use the \n

回答4:

  is the HTML Tag for new line, whereas "\n" is to output a new line (for real).

The browser doesn't output a new line each time the HTML file goes to the next line.

回答5:

You can use the nl2br function to convert \n to  

As said before, HTML does not render \n as new line. It only recognizes the   html tag

回答6:

If you are working with HTML (viewing the result in browser for example) you have to use the HTML way of linebreaks which is:  

来源：https://stackoverflow.com/questions/12410695/new-line-n-in-php-is-not-working

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