"PHP 다중정렬 sortOrderBy()"의 두 판 사이의 차이

2021년 10월 2일 (토) 16:28 기준 최신판

1 개요[ | ]

PHP 다중정렬 orderBy()
PHP 다중정렬 sortValues()
PHP 다중정렬 sortOrderBy()

function sortValues($array, $by, $ascending=[]) {
    $makeComparer = function ($criteria) {
        return function ($a, $b) use ($criteria) {
            foreach( $criteria[0] as $i => $key) {
                $asc = $criteria[1][$i] ?? true;
                if ($a[$key] < $b[$key]) return $asc ? -1 : 1;
                if ($a[$key] > $b[$key]) return $asc ? 1 : -1;
            }
            return 0;
        };
    };
    usort($array, $makeComparer([$by, $ascending]));
    return $array;
}

$employees = [
	['EmployeeID'=>'1', 'Name'=>'한놈', 'BirthDate'=>'1999-01-01'],
	['EmployeeID'=>'2', 'Name'=>'두시기', 'BirthDate'=>'2000-01-01'],
	['EmployeeID'=>'3', 'Name'=>'석삼', 'BirthDate'=>'1999-01-01'],
	['EmployeeID'=>'4', 'Name'=>'너구리', 'BirthDate'=>'2000-01-01'],
];

# BirthDate 오름차순
$employees1 = sortValues($employees, ['BirthDate']);
# BirthDate 내림차순
$employees2 = sortValues($employees, ['BirthDate'], [false]);
# BirthDate, Name 오름차순
$employees3 = sortValues($employees, ['BirthDate','Name']);
# BirthDate 오름차순, Name 내림차순
$employees4 = sortValues($employees, ['BirthDate','Name'], [true,false]);

# 출력
for($i=1; $i<=4; $i++) {
    $var = "employees$i";
    echo "$var: \n", str_replace('},',"},\n",json_encode($$var,JSON_UNESCAPED_UNICODE))."\n\n";
}

2 같이 보기[ | ]

3 참고[ | ]

http://php.net/manual/en/function.usort.php

@@ 1번째 줄: / 1번째 줄: @@
 ==개요==
+;PHP 다중정렬 orderBy()
 ;PHP 다중정렬 sortValues()
+;PHP 다중정렬 sortOrderBy()
 <syntaxhighlight lang='php' line run>
 function sortValues($array, $by, $ascending=[]) {
      $makeComparer = function ($criteria) {
-         $comparer = function ($a, $b) use ($criteria) {
+         return function ($a, $b) use ($criteria) {
-             for($i=0; $i<count($criteria[0]); $i++) {
+             foreach( $criteria[0] as $i => $key) {
-                $key = $criteria[0][$i];
                  $asc = $criteria[1][$i] ?? true;
                  if ($a[$key] < $b[$key]) return $asc ? -1 : 1;
@@ 15번째 줄: / 16번째 줄: @@
              return 0;
          };
-        return $comparer;
      };
-     $comparer = $makeComparer([$by, $ascending]);
+     usort($array, $makeComparer([$by, $ascending]));
-    usort($array, $comparer);
      return $array;
 }
@@ 32번째 줄: / 31번째 줄: @@
 $employees1 = sortValues($employees, ['BirthDate']);
 # BirthDate 내림차순
-$employees2 = sortValues($employees, ['BirthDate'],[false]);
+$employees2 = sortValues($employees, ['BirthDate'], [false]);
 # BirthDate, Name 오름차순
 $employees3 = sortValues($employees, ['BirthDate','Name']);
@@ 39번째 줄: / 38번째 줄: @@
 # 출력
-echo "employee1: \n", preg_replace('/\\},/',"},\n",json_encode($employees1,JSON_UNESCAPED_UNICODE))."\n\n";
+for($i=1; $i<=4; $i++) {
-echo "employee2: \n", preg_replace('/\\},/',"},\n",json_encode($employees2,JSON_UNESCAPED_UNICODE))."\n\n";
+    $var = "employees$i";
-echo "employee3: \n", preg_replace('/\\},/',"},\n",json_encode($employees3,JSON_UNESCAPED_UNICODE))."\n\n";
+    echo "$var: \n", str_replace('},',"},\n",json_encode($$var,JSON_UNESCAPED_UNICODE))."\n\n";
-echo "employee4: \n", preg_replace('/\\},/',"},\n",json_encode($employees4,JSON_UNESCAPED_UNICODE))."\n\n";
+}
 </syntaxhighlight>