Template problem

Along with the Array definition problem which davidak has pointed out on Aug 11, 2014, I found a question mark (?) missing in the php template file. After adding this question mark in PHP tag the pnp4nagios graph are populated.
Changes required in check_apache2.php:-

1. Remove dot (.) from $opt[2] and $def[2] lines as mentioned by Davidak
2. Add question mark (?) to the php open tag at the beginning of file.