PHP数组分配值然后获取变量值

Question

I'm sorry for this beginner question. My problem is that I would like to get the value of the variable name assigned in the array. For instance like this:

$fruits = array($apple, $mango, $banana);

And then I am assigning the elements in the array same values.

for ($i = 0; $i < count($fruits); $i++) { 
    $fruits[$i] = "fruit";
}

When I want to print the apple value in the array I would do:

echo $fruits[0];

But what I want is that to print the value of apple in the array using:

echo $apple;

How would I do this? Sorry beginner here..

Answer 1

Ok,so what you are doing is incorrect to begin with.

$apple = "apple";
$mango = "mango";
$banana ="banana";

$fruits = array($apple, $mango, $banana);

for ($i = 0; $i < count($fruits); $i++) { 
    $fruits[$i] = "fruit";
}
echo "<pre>";
print_r($fruits);

What you have done in your for loop is to override the values of the array. So when you do the print_r you will get:

Array
(
    [0] => fruit
    [1] => fruit
    [2] => fruit
)

If you want to store whether it is a fruit or vegetable (and i wonder if it is the case, since your array name is 'fruits'), however if you do want to do that, then you should use an associative array:

 $cabbage= 'cabbage';
 $stuffIEat = array($apple => 'fruit', 
                    $mango => 'fruit', 
                    $banana =>'fruit',
                    $cabbage => 'vegetable');

Now when you want to see what kind of stuff apple is, you do:

echo $stuffIEat[$apple]; //prints fruit
echo $stuffIEat[$cabbage]; //prints vegetable

Now if you want to print all the fruits that you eat, you do:

print_r(array_keys($stuffIEat,'fruit'));

This will print

Array
(
    [0] => apple
    [1] => mango
    [2] => banana
)