Get Header from PHP cURL response [duplicate]

Answer 1

It converts all headers into an array

// create curl resource
$ch = curl_init();

// set url
curl_setopt($ch, CURLOPT_URL, "example.com");

//return the transfer as a string
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
//enable headers
curl_setopt($ch, CURLOPT_HEADER, 1);
//get only headers
curl_setopt($ch, CURLOPT_NOBODY, 1);
// $output contains the output string
$output = curl_exec($ch);

// close curl resource to free up system resources
curl_close($ch);

$headers = [];
$output = rtrim($output);
$data = explode("\n",$output);
$headers['status'] = $data[0];
array_shift($data);

foreach($data as $part){

    //some headers will contain ":" character (Location for example), and the part after ":" will be lost, Thanks to @Emanuele
    $middle = explode(":",$part,2);

    //Supress warning message if $middle[1] does not exist, Thanks to @crayons
    if ( !isset($middle[1]) ) { $middle[1] = null; }

    $headers[trim($middle[0])] = trim($middle[1]);
}

// Print all headers as array
echo "<pre>";
print_r($headers);
echo "</pre>";

Answer 2

just use simple code to convert curl response to array.

 $response  = curl_exec($ch);
 $header_data= curl_getinfo($ch);
 print_r($header_data);

Answer 3

You just include this coding into your curl request

curl_setopt($curl_exec, CURLOPT_HEADER, true); 
curl_setopt($curl_exec, CURLOPT_NOBODY, true);

after your curl execution use $header_data= curl_getinfo($curl_exec);

Then you get all the headers

print_r($header_data);

or use the shell_exec

echo shell_exec("curl -I http://example.com ");

Answer 4

For the first answer note that the code:

$middle=explode(":",$part);

will produce wrong results with string data containing :, like for example:

Sat, 14 Jan 2017 01:10:01 GMT

The correct code to split the fields to build the array would be like:

$middle=explode(":",$part,2);