PHP Program to make text bold

<?php
    //this is a bold sentence
    echo "<b> this is a bold sentence</b>";
    
    //this is a bold word
    echo "<br> this is a bold word<b> john</b>";
    
    //this is a bold character
    echo "<br>this is a bold character<b> A</b>";
    
    //this is a bold paragraph
    echo "<br> this is a bold paragraph<b> 
    Lorem ipsum dolor sit amet, consectetur adipiscing elit,<br> 
    sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.<br> 
    Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris 
    nisi ut aliquip ex <br>
    ea commodo consequat. Duis aute irure dolor in </b>";
?>

Output

this is a bold sentence
this is a bold word john
this is a bold character A
this is a bold paragraph Lorem ipsum dolor sit amet, consectetur adipiscing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex 
ea commodo consequat. Duis aute irure dolor in