在PHP中将多维数组转换为二维

Question

Is it possible to easily go from multidimensional array to 2 dimensional without looping through it in php? like [key,[key2,value]] to [key,value] that is from

$tstAry = array("a"=>array(1,"alpha"),"b"=>array(2,"beta"));

to

$tstAry2 = array("a"=>"alpha","b"=>"beta");

i tried playing with array_keys and array_values but couldn't combine it correctly

Answer 1

$tstAry2 = array_combine(array_keys($tstAry), array_column($tstAry, 1));

This got me the desired result, is there an easier way or this is it? like [][1]