Zend Certified PHP Engineer (ZCPE) Practice Test

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What is the output of `var_dump(null);` in PHP?

NULL

When you use `var_dump(null);` in PHP, the output indicates the type and value of the variable being examined. In this case, `null` represents a variable that has no value. The `var_dump` function is specifically designed to return information about one or more variables in a readable format, including their type.

Since `null` is a specific data type in PHP that signifies a variable with no assigned value, when `var_dump` is called with `null`, it outputs `NULL`. This output indicates both the type (which is `NULL`) and the value (which is absent, hence `NULL`).

The other options do not correspond to the output of `var_dump(null);`. FALSE and 0 are types in PHP that indicate different states (boolean false and integer zero, respectively), and an empty string ('') represents a string with no characters. None of these accurately convey the state of a variable assigned as `null`.

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