How to implode array indexes?

Question

Is it possible to implode array's indexes? A function is returning me an array and what I need are the indexes of that array so I want to implode only inexes with comma or any other character for my db work

Voluble

Answer 1

You mean something like this...

implode(',', array_keys($some_arr));

... right? ) Here's documentation for array_keys; in short, when called with a single argument (an array), this function just returns all its keys (as array).

Trichromat

It's worth noting that this will work for either auto assigned indicies, or for those you assign yourself with square bracket notation. – Trumaine