从循环创建php数组，没有键中的大括号

Question

I need to push value to an array from a for loop based on a count number found in the database.

Here is the scenario.

$num_images = 5;    
$numb_images = array();
        for ($x = 1; $x <= $num_images; $x++) {

            #$numb_images[] = array('image' . $x => '_image' . $x);
            $numb_images['image' . $x] = "_image" . $x;
        }

When I do print_r($numb_images), it will print the following

Array ( [image1] => _image1 [image2] => _image2 [image3] => _image3 [image4] => _image4 [image5] => _image5 )

2 issues. it prints the key with braces [] which I do not want.

2nd thing is, it is printing them all in same row.

This is exactly how I need it to populate

$numb_images = array(
        'image1' => '_image1',
        'image2' => '_image2',
    );

So the image1 => _image1 key/pair needs to be looped from the given number.

Any help will be highly appreciated.

Thanks

Answer 1

Function print_r is useful if you want to print what is stored in a variable. And it's outputs variable which you are created in right way.

If you do print_r in array

$numb_images = array(
        'image1' => '_image1',
        'image2' => '_image2',
    );

result will be analogical:

Array ( [image1] => _image1 [image2] => _image2 )

So there is no issue. Function print_r prints in brackets [] key of array element.

EDIT:

You need foreach loop to show this fields. Assume that we have array like that:

$numb_images = array(
        'image1' => '_image1',
        'image2' => '_image2',
        'image4' => '_image4',
        'image6' => '_image6',
    );

Now to print this without knowing size of array you can use foreach:

foreach($numb_images as $key => $value)
{
    echo $key . '  ' . $value. '<br/>';
}

Output:

image1 _image1
image2 _image2
image4 _image4
image6 _image6

More information about foreach: http://php.net/manual/en/control-structures.foreach.php