Description:
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CURL_VERBOSE cannot be set.

The test script throws an error: 
Warning: Use of undefined constant  CURLOPT_VERBOSE - assumed ' CURLOPT_VERBOSE' (this will throw an Error in a future version of PHP) in C:\Projects\Project1\custom_lib.php on line 530

Warning: curl_setopt() expects parameter 2 to be integer, string given in C:\Projects\Project1\custom_lib.php on line 530

Tried as parameter 2: true, TRUE, 1, '1'

OS: Windows Server 2016, Windows 10
Running in command prompt or power shell.

The other options I set do work, I need VERBOSE to debug a problem with CURL that appears in 7.2.6 and worked in 7.0.x and 7.1.x.

Test script:
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$curl = curl_init();
curl_setopt($curl, CURLOPT_VERBOSE, 1);