Description:
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So I'm using php 7.0.6 nts VC14 x64, and everything is working. I decided to upgrade to version 7.1.1. After the upgrade, all include commands from scripts within my include_path stopped working.

I tried to downgrade to version 7.1.0, 7.0.15, 7.0.10, 7.0.7 and all of them had the same problem. Php can't find the files within the include_path.

Just to be sure, I reinstalled version 7.0.6 from the scratch an everything was working again. I even installed version 7.0.5 and it's working with this version also.

My include path in my php.ini is: 
include_path = ".;c:\php;c:\PHPMailer;D:\inetpub\vhosts\visioneonline.com.br\httpdocs" 

my include command in my index script is: 
include "/admin/comum/conectar_mysqli.php";

I'm getting a 500 internal error:

PHP Warning:  include(/admin/comum/conectar_mysqli.php): failed to open stream: No such file or directory in D:\inetpub\vhosts\visioneonline.com.br\httpdocs\index.php on line 5
PHP Warning:  include(): Failed opening '/admin/comum/conectar_mysqli.php' for inclusion (include_path='.;c:\php;c:\PHPMailer;D:\inetpub\vhosts\visioneonline.com.br\httpdocs') in D:\inetpub\vhosts\visioneonline.com.br\httpdocs\index.php on line 5

Test script:
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include "/admin/comum/conectar_mysqli.php";

Expected result:
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I expect the file used in the include command to be included.

Actual result:
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I'm getting a 500 internal error.