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What are the metacharacters in PHP Regular Expression?

130. What are the metacharacters in PHP Regular Expression?

1. Metacharacters are characters with a special meaning
2. Metacharacters are set of symbols to perform the mathematical operations on the characters
3. Metacharacters are characters written within the double quotes to search in the string
4. None of the above

Answer: A) Metacharacters are characters with a special meaning

Explanation:

Metacharacters are characters with a special meaning.