There is a syntax error at the ezdebug.php in lines 1059 and 1061.
At those lines there is used str_pad-function
and as you can read from the PHP-manual it has too many quotation marks.

http://php.net/manual/en/function.str-pad.php

Original codes from the lines 1059 and 1061 which causes syntax errors:

$binnet = str_pad( decbin( $lnet ), 32, "0", "STR_PAD_LEFT" );
$binip = str_pad( decbin( $lip ), 32, "0", "STR_PAD_LEFT" );

Fixed codes that won't cause errors:

$binnet = str_pad( decbin( $lnet ), 32, "0", STR_PAD_LEFT );
$binip = str_pad( decbin( $lip ), 32, "0", STR_PAD_LEFT );