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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. Otherwise, all the keys from the array are returned.
- In array
Parameters. needle. The searched value. Note: . If needle is...
- Array push
array_push() treats array as a stack, and pushes the passed...
- Array reduce
Array reduce offers a way to transform data. Please look at...
- Array slice
Parameters. array. The input array. offset. If offset is...
- Array Search
Parameters. needle. The searched value. Note: . If needle is...
- Count
[Editor's note: array at from dot pl had pointed out that...
- Array Combine
array_combine (PHP 5, PHP 7, PHP 8) array_combine — Creates...
- List
Like array(), this is not really a function, but a language...
- In array
Returns an array containing the keys: PHP Version: 4+ Changelog: The strict parameter was added in PHP 5.0
Learn how to use the PHP array_keys() function to get the keys of an array, with examples and syntax. See how to search by value, use strict comparison, and find keys by a test.
The key() function simply returns the key of the array element that's currently being pointed to by the internal pointer. It does not move the pointer in any way. If the internal pointer points beyond the end of the elements list or the array is empty, key() returns null.
Info and examples on array_keys PHP Function from Arrays - Variable and Type Related Extensions.
Learn how to use the PHP array_keys function to get all the keys of an array, or to search for a specific value in an array. See the syntax, examples, advantages, and quiz of this versatile and easy-to-use tool.
The array_keys() function return all the keys or a subset of the keys of an array. The following table summarizes the technical details of this function. Return Value:
