how to create space in html code example

Example 1: html space

<!-- Create space in HTMl -->
&nbsp;

<!-- Example: -->
<p> Hello &nbsp; World! </p>

Example 2: add space in html

<!-- vertical space -->
&nbsp;
&ensp;
&emsp;

<!--horizontal space -->
<br/>

Example 3: space html

php 
echo " ";

html