Script to demonstrate how to extract Header and Body from the Curl response in PHP.

curl.php

<?php

/*#############################
* Developer: Mohammad Sharaf Ali
* Designation: Web Developer
* Version: 1.0
*/#############################

// SETTINGS
ini_set('max_execution_time', 0);
ini_set('memory_limit', '1G');
error_reporting(E_ERROR);

// HELPER METHODS
function initCurlRequest($reqType, $reqURL, $reqBody = '', $headers = array()) {
    if (!in_array($reqType, array('GET', 'POST', 'PUT', 'DELETE'))) {
        throw new Exception('Curl first parameter must be "GET", "POST", "PUT" or "DELETE"');
    }

    $ch = curl_init();
    
    curl_setopt($ch, CURLOPT_URL, $reqURL);
    curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $reqType);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $reqBody);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_HEADER, true);
    
   	$body = curl_exec($ch);

   	// extract header
   	$headerSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
	$header = substr($body, 0, $headerSize);
	$header = getHeaders($header);

	// extract body
	$body = substr($body, $headerSize);

    curl_close($ch);
    
    return [$header, $body];
}

function getHeaders($respHeaders) {
    $headers = array();

    $headerText = substr($respHeaders, 0, strpos($respHeaders, "\r\n\r\n"));

    foreach (explode("\r\n", $headerText) as $i => $line) {
        if ($i === 0) {
            $headers['http_code'] = $line;
        } else {
            list ($key, $value) = explode(': ', $line);

            $headers[$key] = $value;
        }
    }

    return $headers;
}

// MAIN
$reqBody = '';
$headers = array();

list($header, $body) = initCurlRequest('GET', 'https://www.google.com.pk', $reqBody, $headers);

echo '<pre>';
print_r($header);
print_r($body);
echo '</pre>';