convert binary data to image cURL GET request

Question

I am trying to access a web service that returns a jpeg image. It requires two variables, time_sent and user_id, in the URL## Heading ##.

Here is my code:

   $ch = curl_init();
   $options =  array(

            CURLOPT_URL => 'www.example.com/service/?time_sent=time&user_id=user',
            CURLOPT_HTTPHEADER => array('Authorization-Token:' . $api_key, 'Content-type: image/jpeg'),
            CURLOPT_ENCODING => "",
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_HTTPGET => true,
            CURLOPT_CONNECTTIMEOUT => 60,
            CURLOPT_TIMEOUT => 60

        );
    }
    curl_setopt_array($ch, $options);
    $response = curl_exec($ch);

    if(!curl_errno($ch)){
        curl_close($ch);
        $img = imagecreatefromstring($response);
        imagejpeg($img);
        imagedestroy($img);
    }
    else{
        curl_close($ch);
        return curl_error($ch);
    }

Here is my output:

ÿØÿàJFIFÿþ>CREATOR: gd-jpeg v1.0 (using IJG JPEG v80), default quality ÿÛC $.' ",#(7),01444'9=82<.342ÿÛC
2!!22222222222222222222222222222222222222222222222222ÿÀÈ•"ÿÄ
ÿÄµ}!1AQa"q2‘¡#B±ÁRÑð$3br‚
%&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyzƒ„…†‡ˆ‰Š’“”•–—˜™š¢£¤¥¦§¨©ª²³´µ¶·¸¹ºÂÃÄÅÆÇÈÉÊÒÓÔÕÖ×ØÙÚáâãäåæçèéêñòóôõö÷øùúÿÄ
ÿÄµw!1AQaq"2B‘¡±Á #3RðbrÑ $4á%ñ&'()*56789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz‚ƒ„…†‡ˆ‰Š’“”•–—˜™š¢£¤¥¦§¨©ª²³´µ¶·¸¹ºÂÃÄÅÆÇÈÉÊÒÓÔÕÖ×ØÙÚâãäåæçèéêòóôõö÷øùúÿÚ?ê¡ñ…n¦TþÌ)Ÿö« ¾Òü1g¤ýºâ5† ¼7ñW5¢xVÑõhXïØ¿6Ö¦|Wß}¤,&¼øÆ2‰´£.b&^Äè÷s)ùê“xkáÕÔª¯ª\¯÷~uÿâk—³ðóN¬îQ*Ëxq¢]ÂUoø (rÈèWÁ~RË¹:ý^³ï<áe•Z¾æþÕ’Ú[$Lå¾ía\Þ*3)o—ýšÖ<Ò(éæðŒåêˆÊ+VòþÑ4VÓ„ß2ÿyŒ×›ÔÊû¿Þ¨µ%PÊìÌÕŒ§Ìuu ªíß¿o÷k2æõ.%ûì«þõs¯xïº ¶ê9b(È»s>ÖÜ›æ©lüAqoÕÙ«(¾æçîÔEUºSäˆæŸâ¿ò¼Õº’¤¨®Ž¬µåÙ¾]Õ¥i¬ÜÙºì—å_á¨äÑÓk3|ÕËx·^¢ujþ‹Å~»ä—ø¿Ú¬Ýy[ûA?º”cÊ8™òîÿj˜?Öí©vî¦lÚû«Qšqí1šŠ‰±E2¡4H•õm«÷k–ø†ÒÞø¢ÊÍÓ÷®êêtiâK®_/Þ¬]7^+ó6+Ä©÷·W$yyKŸÅÌe$B$Ø‹M¹e··i–²µmQ–gŠÙÕ]k*Ù5=YÒßÍÜÎßuj£b¹½ÒY®.õyÚÒÆ•Ÿø–¦¶ø_¬N-Ê²(þõïxfÓF²‹÷éyltö@ªrVð‡,N~{ÈùwXðãØM·gûß5bM¦²¯ÿe^ãâû+ifw ªª¿7ûÕæšŒVêÿ#n¨æ÷¹#ÊqO§ÿµP2íêµÐÏ2ðµ›-»V„Jizvê±5¿Ë÷j©ù~SAŸ("í}Õ,Ëòn¦V½SLÉäªŠ`Coq-¼©,mµ–¶ŸWûz'™þµWkµXiÑJÈô´¹TÕbæÊæÞ(¦’DºÍVô;xµ$µ··\<¿:ÿ³]Ä¨~Ýi...etc

Can anyone tell me what I am doing wrong?

`Content-type` header is sent by the response, the requests needs a `Accept` header. Check http://stackoverflow.com/questions/5661596/do-i-need-a-content-type-for-http-get-requests — CodeZombie, Feb 28 '13 at 21:43
What you're doing wrong? Well for starters you've not set CURLOPT_BINARYTRANSFER, and given the output you've probably not set the mime type on the response to the client. And is there a reason why you use GD to convert the response to jpeg (when it's already one) — symcbean, Feb 28 '13 at 21:55
@symcbean, imagejpeg produces my output. BINARYTRANSFER is not needed since I am using returntransfer. I don't think I need the mime-type. It was what provided below, but I have multiple headers going on so I'll have to find a way around that. — OneSneakyMofo, Feb 28 '13 at 22:05

score 2 · Accepted Answer · answered Feb 28 '13 at 21:40

2

Can anyone tell me what I am doing wrong?

Nothing really, that looks like a healthy JPG :) Send a

header("Content-type: image/jpeg");

before doing imagejpeg($img); and it should work.

answered Feb 28 '13 at 21:40

Pekka

442,112
142
972
1,088

I sent the header in the cURLOPT_HTTPHEADER option. – OneSneakyMofo Feb 28 '13 at 21:41
@pekka what does it look like it is a picture of? – Billy Moon Feb 28 '13 at 21:42
1

@OneSneakyMofo: that's irrelevant. that only applies to the curl request itself. e.g. server -> image server. you need to set the content-type for the RESPONSE from php, e.g. your server -> your browser. – Marc B Feb 28 '13 at 21:44
1

@Billy I *think* I can see Marilyn Monroe in there. And stars. – Pekka Feb 28 '13 at 21:45
All right, is there any way around that @MarcB? I'm getting this:Cannot modify header information - headers already sent which is a part of another cURL request. – OneSneakyMofo Feb 28 '13 at 21:46
@One what is on the line that PHP is complaining about? – Pekka Feb 28 '13 at 21:47
1

somewhere else in your script, you've got output being performed. you'll have to find where, and eliminate/buffer it. – Marc B Feb 28 '13 at 21:47

convert binary data to image cURL GET request

1 Answers1