internal_functions.php

<?php

// TODO: Create your inspect() function here
function inspect ($iVar)
{
    if(is_string($iVar)){
        return " this is a string with value '{$iVar}'";
    }elseif(is_array($iVar)){
        return  " this is an array";
    }elseif(is_bool($iVar)){
        return " this is a boolean with value '{$iVar}'";
    }elseif(is_int($iVar)){
        return " this is an integer with value '{$iVar}'";
    }elseif(is_float($iVar)){
        return " this is float with value " . number_format($iVar, 1);
    }elseif(is_null($iVar)){
        return " the value is NULL";
    }
}
// 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 $num1:' . inspect($num1) . PHP_EOL;

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

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

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

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

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

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

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

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

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

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