Could not open connection (SAP NW RFC SDK 7.20 and 7.50)
connection credentials: correct
$ php -f sap2.php
PHP Fatal error: Uncaught SAPNWRFC\ConnectionException: Could not open connection in .sap2.php:23
Stack trace:
#0 /var/www/html/sap2.php(23): SAPNWRFC\Connection->__construct(Array)
#1 {main}
thrown in /var/www/html/sap2.php on line 23
$ php -i | grep -A5 -B5 sap
sapnwrfc
sapnwrfc support => enabled
Version => 1.3.0
SAP NW RFC SDK => 7500.0.3
Check the generated trace file. It might give you a hint.
Also note that SDK 7.50 might still cause problems, it hasn't been tested thoroughly. You might want to try SDK 7.20 also.
Could not open connection (SAP NW RFC SDK 7.20 and 7.50)
connection credentials: correct
Each execution:
Could not open connection