Php array find by key

- Php find array key by regex
- Php associative array find by key
- Php multidimensional array find by key
- Php array find key recursive
- Php array find keys
- Php associative array find key by value
- Php find array index by key value
- Php find array element by key value
- Php find array keys starting with
- Php find array key like
- Php array find last key
- Php find object in array by key value
- Php find object in array by key
- Php find in array of arrays by key value
- Php find array key case insensitive