PHP - 访问数组中的JSON数据值

Question

I'm sorry if this is newbie question but I don't understand how to access the [ids] value in the JSON array via PHP.

Why is this not working?

$jsonResponse = json_decode($response,true);
print $jsonResponse[2]["ids"];

This is the JSON array:

Array
(
    [0] => analytics#gaData
    [1] => https://www.googleapis.com/analytics/v3/data/ga?ids=ga:123455&dimensions=ga:eventCategory,ga:eventAction,ga:eventLabel&metrics=ga:visits,ga:pageviews&start-date=2013-01-01&end-date=2020-01-01
    [2] => Array
        (
            [start-date] => 2013-01-01
            [end-date] => 2020-01-01
            [ids] => ga:123455
            [dimensions] => ga:eventCategory,ga:eventAction,ga:eventLabel
            [metrics] => Array
                (
                    [0] => ga:visits
                    [1] => ga:pageviews
                )

            [start-index] => 1
            [max-results] => 1000
        )

    [3] => 1000
    [4] => 9

Answer 1

There doesn't seem to be anything wrong with your code. Your code should be printing, what seems to me, the object ga:123455 if the code is executed. When printing this, this object will be converted to a string. PHP will do (string) ga:123455 (invoke the __toString() method on ga:123455) to convert an object to a string. If this method is absent, there must be a warning that ga:123455 cannot be converted to a string. __toString() might also return an empty string.

I would suggest debugging it by doing print var_dump( $jsonResponse[2]["ids"] ); and print var_dump( (string) $jsonResponse[2]["ids"] );.