如何从数组中获取值

Question

Not sure why I can't this to work. My json is:

[values] => Array
        (
            [0] => Array
                (
                    [field] => id1
                    [value] => 985
                )

            [1] => Array
                (
                    [field] => id2
                    [value] => 6395
                )

            [2] => Array
                (
                    [field] => memo
                    [value] => abcde
                )

I simply want the values of id2

I tried:

foreach ($json['values'] as $values) {  
    foreach ($json as $key=>$data) {
        if ($data['field'] == 'id2') {
            $result = $data['value'];
            print '<br>value: '.$result;
        }
    }
}

Thanks. I know this should be relatively simple and I'm sure I've done this correctly before.

Answer 1

foreach ($json['values'] as $values) { //you're looping your first array, puttin each row in a variable $values
    foreach ($values as $key=>$data) {  //you're looping inside values taking the array index $key and the value inside that index $data
        if ($key == 'id2') { //test if $key (index) is = to id2
            print '<br>value: '.$value; // print the value inside that index
        }
    }
}

this is just an explanation, to what is going wrong with your code, but as @Pawel_W there is no need for the second foreach loop you can directly test

if($values['field']=='id2'){ print $values['value'];}