Zend Certified PHP Engineer (ZCPE) Practice Test

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How do you check if a variable is an array in PHP?

By using the is_array() function

The is_array() function is the correct approach to check whether a variable is an array in PHP. This built-in function takes one parameter and returns true if the variable being evaluated is an array, and false otherwise. Its purpose is specifically to validate the type of a variable, making it a straightforward and reliable method for checking array structures.

The other options provided do not correspond to any functions defined in the PHP standard library. check_array(), is_array_variable(), and var_is_array() do not exist in PHP and would lead to errors if called. Thus, relying on is_array() is not only the correct method but also the best practice for examining variable types in PHP.

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By using the check_array() function

By using the is_array_variable() function

By using the var_is_array() function

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