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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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