How to apply array_map to a function which has more arguments in PHP?

Question

I have a quite simple question, yet I cannot get a way around it. I'd like to walk through an array and change it's items with a function, then return a new array of the new values.

Here is my array:

$array = array('thing1', 'thing2', 'thing3');

This is my function:

function testing ($string, $to)
{
    retrun substr($string, 0, $to);
}

And I'd like to do the following:

array_map(testing($string, 2), $array);

The above statement is not working properly. Can anyone tell me how to make this array_map function to work as expected?

See the documentation for array_map(). Pay attention to the examples. Also, you need to explain exactly what you mean by "not working properly" -- if we are to answer your question then we need to have something to go on. — Sverri M. Olsen
– Sverri M. Olsen, Commented Mar 7, 2014 at 22:09

gen_Eric · Accepted Answer · 2014-03-07 21:57:12Z

3

Pass array_map an anonymous function that calls testing.

array_map(function($string){
    return testing($string, 2);
}, $array);

answered Mar 7, 2014 at 21:57

gen_Eric

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