What is the common mistake made when trying to include a file with a query string in PHP?

When trying to include a file with a query string in PHP, the common mistake is not properly encoding the query string. This can lead to errors or unexpected behavior when including the file. To solve this issue, you should use the `urlencode()` function to encode the query string before including the file. 

<?php
$query_string = "param1=value1&param2=value2";
$encoded_query_string = urlencode($query_string);
include "file.php?$encoded_query_string";
?>

Keywords

include file query string PHP mistake

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