Retrieve single value from this php array

Question

I have this php array $result2 that looks like this.

[
    (int) 0 => object(stdClass) {
        id => (int) 1
        username => 'asd'
        password => '123'
        fullname => 'asd'
        email_addr => '[email protected]'
    }
]

From $result2, I want to have a $json_result that looks like this;

[{"email_addr":"[email protected]"}]

I tried $emailAddress[] = ['email_addr' => $result2['email_addr'] ]; echo json_encode($emailAddress);

However, the error I get is this;

Notice (8): Undefined index: email_addr [APP/Controller\DeptUsersController.php, line 126]

The output is like this which is wrong;

[{"email_addr":null}]

What is the correct way?

$emailAddress[] = ['email_addr' => $result2['email_addr'] ]; — guagay_wk
– guagay_wk, Commented Sep 22, 2015 at 10:03
That means your $result2['email_addr'] is blank first check it is not blank then perform rest operations — Sunil Pachlangia
– Sunil Pachlangia, Commented Sep 22, 2015 at 10:03

u_mulder · Accepted Answer · 2015-09-22 10:04:59Z

2

Read carefully (int) 0 => object(stdClass) It's an object, and this object is an element with index 0 of an array. So:

$emailAddress[] = ['email_addr' => $result2[0]->email_addr ];

answered Sep 22, 2015 at 10:04

u_mulder

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1 Comment

guagay_wk Over a year ago

Correct answer! Thanks!

Ian Ramandika · Accepted Answer · 2015-09-22 10:06:23Z

1

it's object you can't show value if using $result2['email_addr'] you should using this $result2->email_addr method

answered Sep 22, 2015 at 10:06

Ian Ramandika

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Comments

Bestbug · Accepted Answer · 2015-09-22 10:06:48Z

1

You have an object of type stdClass so you can't access directly to the field email_addr. Try this code:

$mObject = new stdClass();
$mObject = $result2[0];
$emailAddress[] = ['email_addr' => $mObject->email_addr ];
echo json_encode($emailAddress);

This should fix your error

answered Sep 22, 2015 at 10:06

Bestbug

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Vahid Moradi · Accepted Answer · 2015-09-22 10:07:03Z

1

Try this:

$emailAddress[] = ['email_addr' => $result2[0]->email_addr ];

answered Sep 22, 2015 at 10:07

Vahid Moradi

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Comments

Mike · Accepted Answer · 2015-09-22 10:08:02Z

1

You can use array_intersect_key :

$wanted = ["email_addr"=>""];
$data = [
    "id" => 1,
    "username" => 'asd',
    "password" => '123',
    "fullname" => 'asd',
    "email_addr" => '[email protected]',
];
$result = array_intersect_key($wanted, $data);
var_dump($result);

It useful when you need one or more key to find. It more saving time

answered Sep 22, 2015 at 10:08

Mike

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