What are common pitfalls or issues that PHP developers may encounter when trying to implement anchor links in form actions?

One common pitfall that PHP developers may encounter when trying to implement anchor links in form actions is that the anchor link may not be properly appended to the URL. To solve this issue, developers can use PHP to concatenate the anchor link to the form action URL using the `$_SERVER['REQUEST_URI']` variable. 

<form action="<?php echo $_SERVER['REQUEST_URI']; ?>#anchor" method="post">
    <!-- form fields go here -->
    <input type="submit" value="Submit">
</form>

Keywords

PHP anchor links form actions URL encoding validation

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