Advanced sorting of a multidimensional array in PHP -

Advanced sorting of a multidimensional array in PHP -

i have looked through answers sorting multidimensional arrays in php on stack overflow, none have straight answered question.

from various answers have understood should using either php usort function or php array_multisort function, not sure how apply these specific array structure:

here variable $array:

array ( [0] => array ( [field1] => 10 [field2] => 100 [field3] => 100 [subarray] => array ( [0] => array ( [field1] => 10 [field2] => 100 [field3] => 100 ) [1] => array ( [field1] => 10 [field2] => 100 [field3] => abcorderbythis ) ) ) [1] => array ( [field1] => 10 [field2] => 100 [field3] => 100 [subarray] => array ( [0] => array ( [field1] => 10 [field2] => 100 [field3] => 100 ) [1] => array ( [field1] => 10 [field2] => 100 [field3] => ghiorderbythis ) ) ) [2] => array ( [field1] => 10 [field2] => 100 [field3] => 100 [subarray] => array ( [0] => array ( [field1] => 10 [field2] => 100 [field3] => 100 ) [1] => array ( [field1] => 10 [field2] => 100 [field3] => deforderbythis ) ) ) )

i able sort array field3 of last array in subarray. accessing element easy plenty php end function so:

<?php foreach($array $array_single){ foreach(end($array_single['subarray']) $sub_array){ echo $sub_array; } } ?>

and on i'm stuck in how sort multidimensional array alphabetically next result:

$array[0] - remains on top because field3 value abcorderbythis $array[2] - jumps middle because field3 value deforderbythis $array[1] - @ bottom because field3 value ghiorderbythis

thanks in advance!

try code:

$array = array(); $arraytemp['field1'] = 10; $arraytemp['field2'] = 100; $arraytemp['field3'] = 100; $arraytemp['subarray'][0]["field1"] = 10; $arraytemp['subarray'][0]["field2"] = 100; $arraytemp['subarray'][0]["field3"] = 100; $arraytemp['subarray'][1]["field1"] = 10; $arraytemp['subarray'][1]["field2"] = 100; $arraytemp['subarray'][1]["field3"] = "abcorderbythis"; $array[] = $arraytemp; $arraytemp['field1'] = 10; $arraytemp['field2'] = 100; $arraytemp['field3'] = 100; $arraytemp['subarray'][0]["field1"] = 10; $arraytemp['subarray'][0]["field2"] = 100; $arraytemp['subarray'][0]["field3"] = 100; $arraytemp['subarray'][1]["field1"] = 10; $arraytemp['subarray'][1]["field2"] = 100; $arraytemp['subarray'][1]["field3"] = "ghiorderbythis"; $array[] = $arraytemp; $arraytemp['field1'] = 10; $arraytemp['field2'] = 100; $arraytemp['field3'] = 100; $arraytemp['subarray'][0]["field1"] = 10; $arraytemp['subarray'][0]["field2"] = 100; $arraytemp['subarray'][0]["field3"] = 100; $arraytemp['subarray'][1]["field1"] = 10; $arraytemp['subarray'][1]["field2"] = 100; $arraytemp['subarray'][1]["field3"] = "deforderbythis"; $array[] = $arraytemp; // sort multidimensional array usort($array, "custom_sort"); // define custom sort function used in usort function custom_sort($a,$b) { homecoming strcmp($a['subarray'][1]["field3"], $b['subarray'][1]["field3"]); }

php multidimensional-array