[WordPress] The Difference in cURL and WordPress Requests

00-get-curl-response.php

<?php

try {
	$curl = curl_init();
	curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'GET');
	curl_setopt($curl, CURLOPT_URL, $url);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
	curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
	$response = curl_exec($curl);

	if (\is_object($response)) {
		return false;
	}

	if (false === $response) {
		throw new Exception(curl_error($curl), curl_errno($curl));
	}

	curl_close($curl);
} catch (Exception $e) {
	trigger_error(
		sprintf(
			'Curl failed with error #%d: %s',
			$e->getCode(),
			$e->getMessage()
		),
		E_USER_ERROR
	);
}

01-safe-remote-get.php

<?php

$response = wp_safe_remote_get($url);
if (is_wp_error($response)) {
	return '';
}
$response = $response['body'];