带'pre'标签和'nl2br'的双换行符 [英] Double line breaks with 'pre' tag and 'nl2br'

问题描述

我对pre标签使用了nl2br函数，但是遇到了一个奇怪的问题:有2个换行符，但是只有一个<br />标签.

I used nl2br function for pre tags, but I've encountered a strange problem: there are 2 line breaks but there's only one <br /> tag.

例如:

code in line 1<br />
code in line 2<br />

显示为:

code in line 1

code in line 2

代替:

code in line 1
code in line 2

推荐答案

在<pre>标记中换行将强制其显示为书面形式:包括空格，制表符和换行符. 因此，回车将创建新行，而<br />将创建第二行.

Wrapping text in a <pre> tag will force it to be displayed as written: including spaces, tabs and new lines. Therefore the carriage return will create a new line AND the <br /> will create a second new line.

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