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PHP curl text vs binary data

How do I check multiple URLs with PHP. The data returned by from the urls might be in text (ASCII) fo开发者_StackOverflow社区rmat or in binary. How do i distinguish which one was returned.

My code has to just detect if the data is binary or text. Nothing else.

Thanks


Look at the content-type header

...
$response = curl_exec($ch);
$info = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
var_dump($info);
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