php item 43 printf the variable is of type integer d..., Reported Questions, PHP

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Question:<?php
$item = 43;
printf("The variable $item is of type integer: %d \n", is_integer($item));
printf("The variable $item is of type array: %d \n", is_array($item));
printf("The variable $item is numeric: %d \n", is_numeric($item));
?>
This code returns the following:

A The variable $item is of type integer: 1
The variable $item is of type array: 0
The variable $item is numeric: 1 
B The variable $item is of type array: 0
The variable $item is of type integer: 1
The variable $item is numeric: 1 
C The variable $item is of type array: 0
The variable $item is of type integer: 1
The variable $item is numeric: 0 
D The variable $item is of type array: 0
The variable $item is of type integer: 1
The variable $item is numeric.

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Question:<?php $item = 43; printf("The variable $item is of type integer: %d \n", is_integer($item)); printf("The variable $item is of type array: %d \n", is_array($item)); printf("The variable $item is numeric: %d \n", is_numeric($item)); ?> This code returns the following:

A The variable $item is of type integer: 1 The variable $item is of type array: 0 The variable $item is numeric: 1

B The variable $item is of type array: 0 The variable $item is of type integer: 1 The variable $item is numeric: 1

C The variable $item is of type array: 0 The variable $item is of type integer: 1 The variable $item is numeric: 0

D The variable $item is of type array: 0 The variable $item is of type integer: 1 The variable $item is numeric.

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