Which statement in php can output data of variable type

Use the gettype() function in PHP to determine the data type of a variable. This function returns a string containing the name of the variable type, including string, integer, float, boolean, array, object, resource, and NULL.

Output variable type data in PHP

Answer: gettype()

The gettype() function is used to determine the data type of a variable. It returns a string containing the name of the variable type.

Usage example:

<code class="php">$name = "John Doe";
echo gettype($name); // 输出：string</code>

Detailed description:

gettype() function works with any variable regardless of its type . It returns one of the following strings:

• string
• integer
• float
• boolean
• array
• object
• resource
• NULL

If the variable is undefined or null, gettype() will return "NULL".

Things to note:

• gettype() function only returns the variable type, not the variable value.
• It is useful for debugging and determining variable types, especially when the variable type is ambiguous.
• If the variable is an object, gettype() will return "object" but will not provide details of the object type.

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