maybe a simple question but I can't figure it out.. I try to put values from an array in a variable, but it doesn't seem to work.
$array = array(0 => 100, "color" => "red");
print_r(array_keys($array));
Outputs:
Array
(
[0] => 0
[1] => color
)
Then why can't I say:
print_r(array_keys($array[1]));
So it will output: color
How do I put color in a variable?
* Update: I work in PHP 5.3, unfortunately
print_r(array_keys($array)[1]);
don't work.
Because $array[1] is the key 1 of $array. If you use PHP 5.4+ you can do this directely:
print_r(array_keys($array)[1]);
Otherwise you have to save it a variable first:
$keys = array_keys($array);
print_r($keys[1]);
Manual entry for array deferencing in 5.4+:
As of PHP 5.4 it is possible to array dereference the result of a function or method call directly. Before it was only possible using a temporary variable.
print_r(), you can echo it :)
Did you mean:
print_r(array_keys($array)[1]);
// -----------------------^^^ After array_keys()
because of $array[1] is not an array. it has just a string value.
array_keys functions indentify only the arrays, can not the strings key.
If the $array[1] have an array then it will return an array with values of keys.
