Custom order for php array based on indexes -


i have php array looks like

$my_arr['cats'] = array('shadow', 'tiger', 'luna'); $my_arr['dogs'] = array('buddy', 'lucy', 'bella'); $my_arr['dolphins'] = array('sunny', 'comet', 'pumpkin'); $my_arr['lizzards'] = array('apollo', 'eddie', 'bruce'); //and many more lines

i need sort based on keys using sorting array like

$order = array('lizzards', 'cats');

i want first item should lizzards array, second item - cats , items not specified in $order array. how can done using usort / uasort / uksort functions?

you can achieve below code

<?php  function sortbykey(&$arr,$key_order) {     if(count(array_intersect(array_keys($arr),$key_order))!=count($key_order))     {         return false;     }     $ordered_keys=array_merge($key_order,array_diff(array_keys($arr),$key_order));     $sorted_arr=[];     foreach($ordered_keys $key)     {         $sorted_arr[$key]=$arr[$key];     }     $arr=$sorted_arr;     return true; }  $my_arr=[]; $my_arr['cats'] = array('shadow', 'tiger', 'luna'); $my_arr['dogs'] = array('buddy', 'lucy', 'bella'); $my_arr['dolphins'] = array('sunny', 'comet', 'pumpkin'); $my_arr['lizzards'] = array('apollo', 'eddie', 'bruce');  $order = array('lizzards', 'cats');  if(sortbykey($my_arr,$order){     echo "sorting done successfully"; } else {     echo "sorting ignored, order element miss matched"; }  print_r($my_arr); ?>

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