What potential caching issues could arise when using file_get_contents in PHP for fetching newsletter content?

When using file_get_contents in PHP for fetching newsletter content, potential caching issues may arise if the content is not updated frequently. To solve this, you can append a unique query string parameter to the URL when fetching the content to ensure that the latest version is always retrieved. 

$url = 'https://example.com/newsletter/content';
$unique_param = '?timestamp=' . time(); // Append a unique query string parameter
$newsletter_content = file_get_contents($url . $unique_param);

Keywords

file_get_contents caching newsletter content PHP issues

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