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          中山php|最優網絡中山做網站 中山php建站

          最優良人

          2012/12/17 at 20:48

          php多維數組的搜索

          1 php搜索多維數組的鍵值

          如下面例子:

          $foo[1]['a']['xx'] = 'bar 1';
          $foo[1]['b']['xx'] = 'bar 2';
          $foo[2]['a']['bb'] = 'bar 3';
          $foo[2]['a']['yy'] = 'bar 4';
          $foo[3]['c']['dd'] = 'bar 3';
          $foo[3]['f']['gg'] = 'bar 3';
          $foo['info'][1] = 'bar 5';

          如果要查找 bar 3 怎么進行查找呢。有三個結果,而這三個結果都要,看下面的函數:
          -------------------------------------------------------------------------------------------------------------------------------
          function array_search_re($needle, $haystack, $a=0, $nodes_temp=array()){
          global $nodes_found;
          $a++;
          foreach ($haystack as $key1=>$value1) {
          ??? $nodes_temp[$a] = $key1;
          ??? if (is_array($value1)){???
          ????? array_search_re($needle, $value1, $a, $nodes_temp);
          ??? }
          ??? else if ($value1 === $needle){
          ????? $nodes_found[] = $nodes_temp;
          ??? }
          }
          return $nodes_found;
          }
          ---------------------------------------------------------------------------------------------------------------------------------
          這個函數就可以把上面要查找到的內容全部返回出鍵名來
          $result = array_search_re('bar 3', $foo);

          print_r($result);

          輸出結果為如下:
          Array ( [0] => Array ( [1] => 2 [2] => a [3] => bb )
          ?????? ?? [1] => Array ( [1] => 3 [2] => c [3] => dd )
          ?????? ?? [2] => Array ( [1] => 3 [2] => f [3] => gg )
          ???? ?? )

          1 php搜索多維數組的鍵名

          function array_search_key($needle, $haystack){
          global $nodes_found;

          foreach ($haystack as $key1=>$value1) {
          ?
          ?if ($key1=== $needle){
          ?
          ??$nodes_found[] = $value1;
          ???????
          ?? }
          ??? if (is_array($value1)){???
          ????? array_search_key($needle, $value1);
          ??? }
          ???
          ???
          }

          return $nodes_found;
          }
          $result = array_search_key('a', $foo);

          print_r($result);

          輸出結果為如下:
          ?

          Array
          (
          ??? [0] => Array
          ??????? (
          ??????????? [xx] => bar 1
          ??????? )

          ??? [1] => Array
          ??????? (
          ??????????? [bb] => bar 3
          ??????? )

          ??? [2] => Array
          ??????? (
          ??????????? [yy] => bar 4
          ??????? )

          )

          標簽:,
          -
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