How to quickly sort php associative array, php associative array_PHP tutorial

How to quickly sort php associative arrays, php associative arrays

The example in this article describes the method of quick sorting of php associative arrays. Share it with everyone for your reference. The details are as follows:

<&#63;php
 function qsort($a,$f) {
 qsort_do(&$a,0,Count($a)-1,$f);
 }
 function qsort_do($a,$l,$r,$f) {
 if ($l < $r) {
   qsort_partition(&$a,$l,$r,&$lp,&$rp,$f);
   qsort_do(&$a,$l,$lp,$f);
   qsort_do(&$a,$rp,$r,$f);
  }
 }
 function qsort_partition($a,$l,$r,$lp,$rp,$f) {
 $i = $l+1;
 $j = $l+1;
  while ($j <= $r) {
   if ($f($a[$j],$a[$l])) {
    $tmp = $a[$j];
    $a[$j] = $a[$i];
    $a[$i] = $tmp;
    $i++;
   }
   $j++;
 }
 $x = $a[$l];
 $a[$l] = $a[$i-1];
 $a[$i-1] = $x;
 $lp = $i - 2;
 $rp = $i;
}
&#63;>

I hope this article will be helpful to everyone’s PHP programming design.

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