It depends on the company, but you can expect questions on operators, data types, Array related inbuilt functions, String related inbuilt functions, Number related functions, OOPS (inheritance, class, object, polymorphism, abstraction, access specifiers, static, final), session, cookies, exception handling, date in PHP.
And, some basic logical programs like printing patterns, sort array, reverse string, reverse array, Fibonacci, palindrome, max /min element from an array.
You can check out this blog on PHP interview questions by Intellipaat for frequently asked PHP interview questions with simple and better explanations.
Also, you can watch this video on PHP interview questions and answers:
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