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                之前已經有很多方法可以通過angular進行本地數據的讀取。以前的例子中,大多數情況都是將數據存放到模塊的$scope變量中,或者直接利用ng-init定義初始化的數據。但是這些方法都只為了演示其他功能的效果。這次來學習一下如何將Angular和PHP相結合,從后臺讀取數據。 首先,利用PHP,我們定義了一組后臺數據,代碼如下(test.php): ~~~ <?php header("Access-Control-Allow-Origin: *"); header("Content-Type: application/json; charset=UTF-8"); $conn = new mysqli("myServer", "myUser", "myPassword", "Northwind"); $result = $conn->query("SELECT CompanyName, City, Country FROM Customers"); $outp = ""; while($rs = $result->fetch_array(MYSQLI_ASSOC)) { if ($outp != "") {$outp .= ",";} $outp .= '{"Name":"' . $rs["CompanyName"] . '",'; $outp .= '"City":"' . $rs["City"] . '",'; $outp .= '"Country":"'. $rs["Country"] . '"}'; } $outp ='{"records":['.$outp.']}'; $conn->close(); echo($outp); ?> ~~~ 這段代碼含義比較簡單,連接數據庫后,從數據庫中利用sql語句選擇相應的數據($conn->query("SELECT CompanyName, City,Country FROM Customers"))。之后,利用循環結構,將取出的數據以鍵值對的形式保存在$outp變量中。 接下來,在js中操作如下: ~~~ <div ng-app="myApp" ng-controller="customersCtrl"> <table> <tr ng-repeat="x in names"> <td>{{ x.Name }}</td> <td>{{ x.Country }}</td> </tr> </table> </div> <script> var app = angular.module('myApp', []); app.controller('customersCtrl', function($scope, $http) { $http.get("test.php") .success(function (response) {$scope.names = response.records;}); }); </script> ~~~ 這里仍然應用了$http服務進行數據的讀取,傳入數據文件對應的url路徑,成功后返回數據,并綁定到$scope.names變量上。
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