You want to check if a variable $data is an integer or a float in PHP. Which code snippet correctly uses gettype() to do this?

hard📝 Application Q8 of 15

PHP - Type Handling

You want to check if a variable $data is an integer or a float in PHP. Which code snippet correctly uses gettype() to do this?

Aif (gettype($data) == "number") { echo "Number"; }

Bif (gettype($data) == "integer" || gettype($data) == "double") { echo "Number"; }

Cif (gettype($data) == "int" || gettype($data) == "float") { echo "Number"; }

Dif (typeof($data) == "int" || typeof($data) == "float") { echo "Number"; }

Step-by-Step Solution

Solution:

Step 1: Recall gettype() returns "integer" and "double" for int and float
In PHP, floats are called "double" by gettype().
Step 2: Check each option's type strings
if (gettype($data) == "integer" || gettype($data) == "double") { echo "Number"; } uses correct strings "integer" and "double". Others use invalid or non-PHP strings.
Final Answer:
if (gettype($data) == "integer" || gettype($data) == "double") { echo "Number"; } -> Option B
Quick Check:
Floats = "double" in gettype() [OK]

Quick Trick: Floats show as "double" in gettype(), not "float" [OK]

Common Mistakes:

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