PHP Notice: Undefined index

[oleteacher]

Wondering what is going wrong, getting this message:

PHP Notice: Undefined index: line in /home/xxxxxxi/public_html/testbed/mar.php on line 126

The report reads like this:

2017-10-05T13:55:47-05:00
Scanning /home/xxxxxxi/public_html/testbed/mem
Including file extensions: php
ERROR!  Syntax checking was selected and a PHP binary lower than 7.0.0-dev was specified.
Processed 8346 lines contained in 98 files.
Processing took 2.6360139846802 seconds.

Have php7.0 installed. Maybe I do not understand entering correct path to php7.0 in command line?