Can't access value of named array keys in PHP/Twig

Question

I have a PHP array like this:

index.php:

$state = [
  'isLoggedIn' => false,
  'isB2BCustomer' => false
];

print($twig->render('index.html', ['state' => $state]));

index.html:

{% for key, stateItem in state %}
  <tr>
    <td>{{ key }}: {{ stateItem }}</td>
  </tr>
{% endfor %}

This gives me the following output:

|---------------------|
| State               |
|---------------------|
| isLoggedIn:         |
|---------------------|
| isB2BCustomer:      |
|---------------------|

I'm expecting:

|---------------------|
| State               |
|---------------------|
| isLoggedIn: 0       |
|---------------------|
| isB2BCustomer: 0    |
|---------------------|

It shows the keys correctly, but I can't seem to figure out how to get the value.

Why would you expect 0 for false??? 3v4l.org/DlR10 You'll either need to store 0 or display an actual 0 when the value is false. — AbraCadaver
– AbraCadaver, Commented May 6, 2019 at 20:24
@AbraCadaver Twig/PHP outputs booleans as integers right? I'm just doing this as a test to access the values, so I put them in a table to see them. And I expect the false values to be output as 0. Any idea about how to access the values? — erol_smsr
– erol_smsr, Commented May 6, 2019 at 20:26
I don't know twig but PHP doesn't output false, maybe {% if stateItem %}1{% else %}0{% endif%} or somesuch. — AbraCadaver
– AbraCadaver, Commented May 6, 2019 at 20:28
@AbraCadaver You're right, booleans simply aren't displayed at all like you said. I remember boolean values were automatically type casted to integers (either 0 or 1), but I remember wrong I think. Thanks this solved it. — erol_smsr
– erol_smsr, Commented May 6, 2019 at 20:31
"A boolean TRUE value is converted to the string "1". Boolean FALSE is converted to "" (the empty string). This allows conversion back and forth between boolean and string values." — AbraCadaver
– AbraCadaver, Commented May 6, 2019 at 20:45

Remco K. · Accepted Answer · 2019-05-07 11:51:58Z

1

{% for key, stateItem in state %}
  <tr>
    <td>{{ key }}: {{ stateItem ? '1' : '0' }}</td>
  </tr>
{% endfor %}

Found here: https://twig.symfony.com/doc/2.x/templates.html#other-operators

answered May 7, 2019 at 11:51

Remco K.

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