What are the differences between using target="_top" and top.location.href in PHP for frame navigation?

When navigating frames in PHP, the main difference between using target="_top" and top.location.href is that target="_top" is an HTML attribute used within a link or form, while top.location.href is a JavaScript method that can be executed within a PHP script. Using target="_top" will load the linked page in the top-level browsing context, replacing all frames, while top.location.href will change the URL of the top-level browsing context without affecting frames. 

// Using target="_top" in HTML
<a href="new_page.php" target="_top">Go to new page</a>

// Using top.location.href in PHP
echo "<script>top.location.href = 'new_page.php';</script>";

Keywords

target="_top" top.location.href frame navigation differences PHP

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