remove function unused
change to use register_func from ephp_context to ephp
remove and refactor code not used
ensure all tests are destroyed before to go to the next
add behaviour for ephp_func implementations
new tests for input from main/1 (script)
escape dollar symbol
use whatever as conditions returning its boolean coverted value
fix in_array function and complete the test for array functions
refactor the function publish method
fix and enhance the include/require tests
add chr function
add string tests