The key() function simply returns the key of the array element that's currently being pointed to by the internal pointer.

array_keys() returns the keys, numeric and string, from the array. If a filter_value is specified, then only the keys for that value are returned.

The array_keys() function returns an array containing the keys. Syntax: array_keys(array, value, strict)

23 июл. 2010 г. · Use the array_search function. Example from php.net $array = array(0 => 'blue', 1 => 'red', 2 => 'green', 3 => 'red'); $key = array_search('green php - How to get the key name of a specific value in an array PHP - create new array with only selected keys from an existing ... php search array key and get value [duplicate] - Stack Overflow Другие результаты с сайта stackoverflow.com

array_key_exists() returns true if the given key is set in the array. key can be any value possible for an array index.

array_keys() - Return all the keys or a subset of the keys of an array · array_values() - Return all the values of an array · array_key_exists() - Checks if the ... In_array · Array_search · Array_keys · Array_values

An array in PHP is actually an ordered map. A map is a type that associates values to keys. This type is optimized for several different uses.

array_key_first(array $array ): int|string|null Get the first key of the given array without affecting the internal array pointer.

4 июл. 2024 г. · In PHP, isset() checks if a variable is set and not null. To get a specific key's value from an array, use isset() to ensure the key exists ...

Polyfill for array_key_last() function added in PHP 7.3. Get the last key of the given array without affecting the internal array pointer.