Get all keys from an array that starts with a certain string
![How to extract child key value from an array [PHP]? - Stack Overflow](https://i.stack.imgur.com/viYnl.png "How to extract child key value from an array [PHP]? - Stack Overflow")
How to extract child key value from an array [PHP]? - Stack Overflow
3.png "PHP array_keys() Function")
PHP array_keys() Function
Making Sense of PHP's array_keys() Function
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GitHub - lucasantarella/php-array-keys-recursive: Library to get array keys of a multidimensional array, retaining the original array structure.
PHP - Get keys from array
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