Explain the categories of PHP Operators in web technology?
There are arithmetic operators (+, -, %, ++, etc.), comparison
operators (<, ==, >=, !=, etc.), logical operators
(&&, !, , etc.), assignment operators (=, *=, %=, +=,
etc.), conditional operator (?:).
The order of operations is unary (!, ++, --), multiplicative
(left to right; *, /, %), additive (left to right; +, -),
relational (left to right; <, <=, >, >=), equality
(left to right; ==, !=), logical and (left to right; &&,
and), logical or (left to right; , or), conditional (?:),
assignment.