Issue with array_map callback

Question

At first I had this (work in wamp but not in my web server)

$ids = array_map(function($item) { return $item['user_id']; }, $data['student_teacher']);`

So I try to convert the code to that but nothing work ( i got Array,Array,Array,Array,Array,Array from outpout )

$ids = array_map($this->myarraymap(null), $data['student_teacher']);

function myarraymap($item) {
        return $item['user_id']; 

    }

John Cartwright · Accepted Answer · 2011-11-21 17:07:09Z

7

You need to pass it a callback, and not actually pass it the execution of the function, i.e.,

$ids = array_map(array($this, 'myarraymap'), $data['student_teacher']);

function myarraymap($item) {
   return $item['user_id']; 
}

answered Nov 21, 2011 at 17:07

John Cartwright

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1 Comment

Glad it worked. Don't forget to accept answers if you found them helpful :D