How to Properly Insert PHP Variables into Echoed HTML Strings?

Insert Variables into Echoed Strings in PHP

When trying to embed variables within echoed strings in PHP, issues can arise. Consider the following unsuccessful attempt:

<?php
$i = 1;
echo '
<p class="paragraph$i">
</p>
';
++i;
?>

In this case, the variable $i is not parsed within the single-quoted string. To resolve this, there are two main approaches:

1. Use double quotes:

$i = 1;
echo "
<p class=\"paragraph$i\">
</p>
";
++i;

2. Use a dot to extend the echo:

$i = 1;
echo '<p class="paragraph'.$i.'"></p>';
++i;

Both approaches will allow PHP to parse the variable $i within the echoed string.

Therefore, the correct way to echo the HTML element with a dynamic class is:

$i = 1;
echo '<p class="paragraph' . $i . '"></p>';
++i;

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