How can PHP developers ensure proper integration of PHP code within HTML elements to avoid syntax errors or unexpected behavior?

PHP developers can ensure proper integration of PHP code within HTML elements by properly enclosing PHP code within PHP opening and closing tags (`<?php ?>`) and using echo or print statements to output PHP variables or functions within HTML elements. This helps avoid syntax errors or unexpected behavior by clearly separating PHP code from HTML code. 

&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;PHP Integration&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;h1&gt;Welcome, &lt;?php echo $username; ?&gt;!&lt;/h1&gt;
    &lt;p&gt;Your account balance is: &lt;?php echo getAccountBalance($userID); ?&gt;&lt;/p&gt;
&lt;/body&gt;
&lt;/html&gt;

Keywords

PHP integration HTML elements syntax errors unexpected behavior

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