In Twig, check if a specific key of an array exists

✔ Recommended Answer

Twig example:

{% if array.key is defined %}  // do something{% else %}  // do something else{% endif %}

Source: stackoverflow.com

Answered By: phpisuber01

Method #2

In Twig, you can use the in operator to check if a specific key exists in an array. Here's an example:

twig
{% set myArray = {'foo': 'bar', 'baz': 'qux'} %}

{% if 'foo' in myArray %}
  Key 'foo' exists in myArray.
{% endif %}

{% if 'nonexistent' not in myArray %}
  Key 'nonexistent' does not exist in myArray.
{% endif %}

In this example, the in operator is used to check if the key 'foo' exists in the myArray array. If it does, the message "Key 'foo' exists in myArray." will be displayed.

You can also use the not in operator to check if a key does not exist in an array, as shown in the second if statement. If the key 'nonexistent' does not exist in myArray, the message "Key 'nonexistent' does not exist in myArray." will be displayed.

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