Description:
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The docu[1] states, that the array returned by curl_getinfo contains a key 'content_type'.
But this is not the case, if there has been a connection error.

[1] http://www.php.net/manual/en/function.curl-getinfo.php

Reproduce code:
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$ch = curl_init('xyz');

curl_exec( $ch );
$curlInfo = curl_getinfo( $ch );
var_dump( $curlInfo['content_type'] );


Expected result:
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NULL

Actual result:
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Notice: Undefined index: content_type in /home/ymc-toko/curl_bug.php on line 7
NULL