array_assoc_pluck.php

<?php
// copied from https://raw.githubusercontent.com/DataTables/DataTables/master/examples/server_side/scripts/ssp.class.php

function array_pluck($a, $prop)
{
    $out = array();

    for ( $i=0, $len=count($a) ; $i<$len ; $i++ ) {
        if(empty($a[$i][$prop])){
            continue;
        }
        //removing the $out array index confuses the filter method in doing proper binding,
        //adding it ensures that the array data are mapped correctly
        $out[$i] = $a[$i][$prop];
    }

    return $out;
}