What is the array_keys() function?
PHP array_keys() function returns an array containing all the keys inside the array. array_keys() returns the keys, numerics, and strings from the array.
Syntax
array_keys(array, value, strict)
Parameters:
-
array: an array containing keys to return. -
search_value: if specified, then only keys containing the specified values are returned. -
strict: determines if strict comparison (===) should be used during the search.
What is meant by keys and elements?
<?php$a=array("Ahmedabad"=>"AMD","London"=>"LHE","New york"=>"JFK");print_r(array_keys($a));?>
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