The parser does not display everything, how to solve?

Question

PHP

Good evening, I wrote a small parser on simpledomparser
not on my hosting .. I get one number of lines in response .. for example 10 ..
and on the other host it is less .. only 5 ..
the code is the same ..
tell me what to look for the reason?

Answer 1

in the difference between php versions
in authorization by ip
in dna