What potential pitfalls should be considered when using multiple opening and closing PHP tags in a script for URL redirection?

Using multiple opening and closing PHP tags in a script for URL redirection can lead to unexpected output or errors due to whitespace or headers being sent before the redirection. To avoid this issue, it's recommended to use a single set of PHP tags for the entire script to ensure proper execution. 

<?php
// Correct way to handle URL redirection in PHP
header("Location: http://www.example.com");
exit;
?>

Keywords

PHP opening tags closing tags script URL redirection

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