Php multi-dimensional array sorting method

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// Sort multiple arrays $ Ar1 = array ("ten", 100,100, ""); $ Ar2 = array (1, 3, "2", 1 ); Array_multisort ($ ar1, $ ar2 ); Var_dump ($ ar1 ); Var_dump ($ ar2 ); // In this example, after sorting, the first array will contain "10", "a", 100,100. The second array will contain 1, 1, "2", 3. The project order in the second array is exactly the same as that in the first array (100 and 100. $ Ar = array ( Array ("10", 11,100,100, ""), Array (1, 2, "2", 3, 1) ); Array_multisort ($ ar [0], sort_asc, sort_string, $ Ar [1], sort_numeric, sort_desc ); Var_dump ($ ar ); /* Sort order mark: ◆ Sort_asc-sort by ascending order ◆ Sort_desc-sort by descent Sorting type flag: ◆ Sort_regular-compare projects according to common methods ◆ Sort_numeric-compare projects by numerical values ◆ Sort_string-compare items by string You cannot specify two Sorting flags of the same type after each array. The sorting flag specified after each array is only valid for this array-the default values are sort_asc and sort_regular. */ Function cmp ($ a, $ B) { Return strcmp ($ a ["fruit"], $ B ["fruit"]); } $ Fruits [0] ["fruit"] = "lemons "; $ Fruits [1] ["fruit"] = "apples "; $ Fruits [2] ["fruit"] = "grapes "; Usort ($ fruits, "cmp "); While (list ($ key, $ value) = each ($ fruits )){ Echo "$ fruits [$ key]:". $ value ["fruit"]. ""; } // Check out a complete $ Data = array ( Array ( 'Name' => 'Alice ', 'Key' => '2fc4ab3d639e5400efdfc73bc27e83f1 ', 'Age' => 20 ), Array ( 'Name' => 'loudia ', 'Key' => '831c2b79c1f19af39c7e3321e11e5f5e ', 'Age' => 18 ), Array ( 'Name' => 'Beatrice ', 'Key' => '6f8512a2066b8f35a27a495ce1228c76 ', 'Age' = & gt; 100 ), Array ( 'Name' => 'Denise ', 'Age' => 25, 'Key' => 'ef6de3b178bf9f69a9fef72e4ee7bbe9'  ) ); $ Arr1 = sortdata ($ data, "name", "asc "); Echo "<pre> "; Var_dump ($ arr1 ); Echo "</pre> "; $ Arr2 = sortdata ($ data, "age", "desc "); Echo "<pre> "; Var_dump ($ arr2 ); Echo "</pre> "; Function sortdata ($ data, $ col, $ order ){ If (count ($ data) $ temp_array [key ($ data)] = array_shift ($ data ); Foreach ($ data as $ key => $ val ){ $ Offset = 0; $ Found = false; Foreach ($ temp_array as $ tmp_key => $ tmp_val ){ If (! $ Found and strtolower ($ val [$ col])> strtolower ($ tmp_val [$ col]) { $ Temp_array = array_merge (array) array_slice ($ temp_array, 0, $ offset ), Array ($ key => $ val ), Array_slice ($ temp_array, $ offset) ); $ Found = true;    } $ Offset ++;   } If (! $ Found ){ $ Temp_array = array_merge ($ temp_array, array ($ key => $ val ));    }  } If (strtolower ($ order) = "asc "){ $ Array = array_reverse ($ temp_array ); } Else { $ Array = $ temp_array;  } Return $ array; }

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