PHP cURL HTTP CODE return 0

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青春惊慌失措
青春惊慌失措 2020-11-29 23:03

I dont understand when I echo $httpCode I always get 0, I was expecting 404 when I change $html_brand into a broken url. Is there anything that I miss or do not know of? Tha

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  •  执念已碎
    2020-11-29 23:19

    If you connect with the server, then you can get a return code from it, otherwise it will fail and you get a 0. So if you try to connect to "www.google.com/lksdfk" you will get a return code of 400, if you go directly to google.com, you will get 302 (and then 200 if you forward to the next page... well I do because it forwards to google.com.br, so you might not get that), and if you go to "googlecom" you will get a 0 (host no found), so with the last one, there is nobody to send a code back.

    Tested using the code below.

     $html_brand,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_HEADER         => true,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_ENCODING       => "",
        CURLOPT_AUTOREFERER    => true,
        CURLOPT_CONNECTTIMEOUT => 120,
        CURLOPT_TIMEOUT        => 120,
        CURLOPT_MAXREDIRS      => 10,
    );
    curl_setopt_array( $ch, $options );
    $response = curl_exec($ch); 
    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
    
    if ( $httpCode != 200 ){
        echo "Return code is {$httpCode} \n"
            .curl_error($ch);
    } else {
        echo "
    ".htmlspecialchars($response)."
    "; } curl_close($ch);

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