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What will be the output of the following PHP code (16)?

64. What will be the output of the following PHP code?

<?php
echo var_dump(is_nan(10));
?>

1. bool(false)
2. bool(true)
3. false
4. true

Answer: A) bool(false)

Explanation:

The is_nan() method is used to check whether the given value is NaN or not. Thus, the output of the above statement will be "bool(false)".