The sizeof() function counts the elements of an array, or the properties of an object.
This function is an alias of the count() function.
Note: This parameter was added in PHP 4.2
Note: This function may return 0 if a variable isn't set, but it may also return 0 if a
variable contains an empty array. The isset() function can be used to test if a variable is set.
The output of the code above will be:
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