What are the potential pitfalls of using cURL connections to prevent bot detection when fetching content from URLs?

Using cURL connections to prevent bot detection when fetching content from URLs can lead to potential pitfalls such as being blocked by websites that detect and block automated requests. To avoid this, it is important to mimic human behavior by setting appropriate headers, using randomized user agents, and adding delays between requests. 

<?php
$url = 'https://example.com';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3');
// Add more headers if needed
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_AUTOREFERER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
// Add delay between requests
sleep(5);
$result = curl_exec($ch);
curl_close($ch);

echo $result;
?>

Keywords

cURL bot detection fetching content URLs pitfalls

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