如何在PHP中按字母顺序对值进行多维数组排序

Question

I need to sort an array alphabetically depending of the value of lat_name. I tried the SORT function but it had no effect.

    array(20) {
  [126]=>
  array(5) {
    ["first_name"]=>
    string(8) "Marlène"
    ["last_name"]=>
    string(7) "GAL"

  }
  [4]=>
  array(5) {
    ["first_name"]=>
    string(6) "Agnès"
    ["last_name"]=>
    string(5) "MIO"

  }
  [7]=>
  array(5) {
    ["first_name"]=>
    string(5) "Alain"
    ["last_name"]=>
    string(7) "PLAT"

  }
  [5]=>
  array(5) {
    ["first_name"]=>
    string(5) "Alain"
    ["last_name"]=>
    string(8) "DIÈS"

  }
  [9]=>
  array(5) {
    ["first_name"]=>
    string(9) "Alexandre"
    ["last_name"]=>
    string(8) "MIGNE"

  }

Answer 1

cf uksort

You write a custom function that defines your comparisons and the sorter uses that.