How can one prevent the duplication of JavaScript files when using include statements in PHP?

To prevent the duplication of JavaScript files when using include statements in PHP, you can use a variable to keep track of whether the file has already been included or not. By setting a flag before including the file and checking this flag before including it again, you can ensure that the file is only included once. 

<?php
$included_js = false;
if(!$included_js){
    echo '<script src="script.js"></script>';
    $included_js = true;
}
?>

Keywords

JavaScript duplication include statements PHP prevention

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