I would think this would be easier to find but I've been scouring google with no luck. Can you create an array with both a numbered and named index? I know it has to be possible because mysqli_fetch_array returns one, but I can't find any reference to it. Thanks.
3 Answers
As per official documentation:
An array in PHP is actually an ordered map. A map is a type that associates values to keys.
The key can either be an integer or a string. The value can be of any type.
Comments
Nothing to it:
$x = array();
$x['foo'] = 'bar';
$x[1] = 'baz';
Use any key you want. As long as whatever you're using for a key is an int or a valid string, it can be a key.
Comments
Yes. PHP arrays can have mixed keys (strings and integers). A reference to it can be found in the docs here: http://php.net/manual/en/language.types.array.php.
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; it can be treated as an array, list (vector), hash table (an implementation of a map), dictionary, collection, stack, queue, and probably more. As array values can be other arrays, trees and multidimensional arrays are also possible.
Check Example #3:
<?php
$array = array(
"foo" => "bar",
"bar" => "foo",
100 => -100,
-100 => 100,
);
var_dump($array);
?>
outputs:
array(4) {
["foo"] => string(3) "bar"
["bar"] => string(3) "foo"
[100] => int(-100)
[-100] => int(100)
}
$keys = array_keys($my_arr);$my_arr[$keys[1]] = "element_value";[1]being the integer. This requires less memory than storing an array with both an integer and named element, plus it makes manipulation/editing simple.