internal_functions.php

<?php

function inspect($suspect)
{
	switch (gettype($suspect)) {
		case 'NULL':
			return 'The value is NULL';
		case 'array':
			$message = 'The value is an ';
			if (empty($suspect)) $message .= 'empty ';
			$message .= 'array';
			return $message;
		case 'boolean':
			return 'The boolean is ' . ($suspect ? 'TRUE' : 'FALSE');
		case 'double':
			return "The float is $suspect";
		case 'string':
			return 'The string is ' . (empty($suspect) ? 'empty' : "\"$suspect\"");
		default:
			return 'The ' . gettype($suspect) . " is $suspect";
	}
}

// Do not mofify these variables!
$string1 = "I'm a little teapot";
$string2 = '';
$array1 = [];
$array2 = [1, 2, 3];
$bool1 = true;
$bool2 = false;
$num1 = 0;
$num2 = 0.0;
$num3 = 12;
$num4 = 14.4;
$null = NULL;

// TODO: After each echo statement, use inspect() to output the variable's type and its value

echo 'Inspecting $num1:' . PHP_EOL;
echo inspect($num1) . PHP_EOL;

echo 'Inspecting $num2:' . PHP_EOL;
echo inspect($num2) . PHP_EOL;

echo 'Inspecting $num3:' . PHP_EOL;
echo inspect($num3) . PHP_EOL;

echo 'Inspecting $num4:' . PHP_EOL;
echo inspect($num4) . PHP_EOL;

echo 'Inspecting $null:' . PHP_EOL;
echo inspect($null) . PHP_EOL;

echo 'Inspecting $bool1' . PHP_EOL;
echo inspect($bool1) . PHP_EOL;

echo 'Inspecting $bool2' . PHP_EOL;
echo inspect($bool2) . PHP_EOL;

echo 'Inspecting $string1' . PHP_EOL;
echo inspect($string1) . PHP_EOL;

echo 'Inspecting $string2' . PHP_EOL;
echo inspect($string2) . PHP_EOL;

echo 'Inspecting $array1' . PHP_EOL;
echo inspect($array1) . PHP_EOL;

echo 'Inspecting $array2' . PHP_EOL;
echo inspect($array2) . PHP_EOL;