Question

I want to send a request to a web service via an API as shown below. I have to pass
a custom HTTP header (Hash), I’m using CURL, my code seems to work but I’m not getting
the right response. I’m told it has to do with the hash value, though the value has
been seen to be correct. Is there anything wrong with the way I’m passing it or with
the code itself?

 <?php
    $ttime=time();
    $hash="123"."$ttime"."dfryhmn";
    $hash=hash("sha512","$hash");
    $curl = curl_init();
    curl_setopt($curl,CURLOPT_HTTPHEADER,array('Hash:$hash'));      
    curl_setopt ($curl, CURLOPT_URL, 'http://web-service-api.com/getresult.xml?clientid=456&time=$ttime');  
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);  
    $xml = curl_exec ($curl);  
     
    if ($xml === false) {
        die('Error fetching data: ' . curl_error($curl));  
    }
    curl_close ($xml);  
    
    echo htmlspecialchars("$xml", ENT_QUOTES);
    
    ?>

Answer 1

'Hash:$hash' should be either "Hash: $hash" (double quotes) or 'Hash: '.$hash

The same goes for your URL passed in CURLOPT_URL