How to send Accept Encoding header with curl in PHP

php curl gzip

16,801

Solution 1

You can use CURLOPT_ENCODING:

curl_setopt($ch, CURLOPT_ENCODING, "");

The contents of the "Accept-Encoding: " header. This enables decoding of the response. Supported encodings are "identity", "deflate", and "gzip". If an empty string, "", is set, a header containing all supported encoding types is sent.

http://php.net/manual/en/function.curl-setopt.php

Alternatively, you can send an header:

$headers = array(
        'Accept: text/plain'
    );

To force the response in text/plain

Solution 2

If you mean how to ungzip the response I did it like this:

<?php
....
$headers = array(
    "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8",
    "Accept-Encoding: gzip, deflate",
    "Accept-Charset: utf-8;q=0.7,*;q=0.3",
    "Accept-Language:en-US;q=0.6,en;q=0.4",
    "Connection: keep-alive",
);
....
$response = curl_exec($curl);
// check for curl errors
if ( strlen($response) && (curl_errno($curl)==CURLE_OK) && (curl_getinfo($curl, CURLINFO_HTTP_CODE)==200) ) {
    // check for gzipped content
    if ( (ord($response[0])==0x1f) && (ord($response[1])==0x8b) ) {
        // skip header and ungzip the data
        $response = gzinflate(substr($response,10));
    }
}
// now $response has plain text (html / json / or something else)

16,801

Author by

vellai durai

Updated on June 23, 2022

Comments

vellai durai almost 2 years
How to send Accept Encoding header with with curl in PHP
```
  $data=json_encode($data);
$url = 'url to send';
$headers = array(
        'Content-Type: application/json'
    );
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);        
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); 
    curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
    curl_setopt($ch, CURLOPT_SSLVERSION, 4);
    $datas  = curl_exec($ch);
    curl_close($ch);
```
How to Decompress the response
- Mike about 8 years
  
  The Content-Type header is sent from the server to the client. You're looking for Accept* headers. (e.g. Accept, Accept-Encoding, Acccept-Language). This tells the server what your user agent supports.
- Pedro Lobito about 8 years
  
  @Mike not exactly, the client can also send Accept-Encoding header requests.
- Mike about 8 years
  
  @PedroLobito Interesting. How does that differ from Accept?
- Pedro Lobito about 8 years
  
  14.3 Accept-Encoding - w3.org/Protocols/rfc2616/rfc2616-sec14.html
- Mike about 8 years
  
  @PedroLobito Sorry, I misread your first comment here. I thought you were saying the client can send Content-Type. From the link above, The Content-Type entity-header field indicates the media type of the entity-body sent to the recipient, so I was right; it can only be sent from the server to the client.
- Pedro Lobito about 8 years
  
  @mike here's a request send from my browser to this page - pastebin.com/GaTXDnfM - You can see clearly that me, the client, is requesting Accept-Encoding:
- Pedro Lobito about 8 years
  
  I misunderstood your first comment, we're both right... :)
dudeNumber4 over 7 years

Accept: text/plain doesn't force anything. Results still HTML.