Delete one item from array with matching keys

Question

I have an array

$array = ['f'=>'foo', 'f'=>'foo', 'f'=>'foo','g'=>'good'];

and I want to delete only one item from this array with matching key, like the following:

unset($array['f']);

However, this will delete the all items with this matching key 'f' and only one item will remain. Is there a way to do something like this, but apply it only to the first matching item in the array?

Answer 1

First of all you have a syntax error.

$array=$array(['f'=>'foo', 'f'=>'foo', 'f'=>'foo','g'=>'good']);

You have an $ extra and [] extras, and you can't have a lots off records with the same key(because the last one will override the previously)... The correct way to define

$array= array('f'=> array('foo', 'foo2', 'foo3'), 'g'=>'good');

The values will be a new array inside de F key. And then you can remove only one record

unset($array['f'][0]);

now your arrays var_dump:

$array= array('f'=> array('foo2', 'foo3'), 'g'=>'good');

Answer 2

我已经根据cmorrissy评论使用它解决了这个问题，只有一个项目，所以该变量向我显示了数量，我必须检查是否

if($product[$id]['quantity']>1){ $product[$id]['quantity']--;}else{unset($product[$id]);}

Answer 3

if you var_dump($array); this would be the output

var_dump($array);
array(
    f => foo
    g => good
 )

since you have an array with the same index it will be displayed as one, and thats why it will be deleted