回答編集履歴
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追記
test
CHANGED
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@@ -5,3 +5,101 @@
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var hexHash = SparkMD5.hash('Hi there');
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```と同じ方法でハッシュ出来そうですけど？
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追記
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---
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検証コードを作ってみました。
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`test.php`
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```php
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<?php
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header("Content-type: application/json; charset=utf-8");
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// Livedoorお天気Webサービス
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// http://weather.livedoor.com/weather_hacks/webservice
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echo file_get_contents("http://weather.livedoor.com/forecast/webservice/json/v1?city=130010");
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```
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`test.html`
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```html
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title></title>
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<style>
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* {box-sizing:border-box;}
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#rawData {width:800px;height:300px}
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#hash {width:400px;}
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</style>
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<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
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<script src="spark-md5.min.js"></script>
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<script>
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$(function(){
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$.ajax({
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cache: false,
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dataType: "text",
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url: 'test.php',
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type: 'GET',
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success: function(data) {
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$('#rawData').val(data);
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var hexHash = SparkMD5.hash(data);
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$('#hash').val(hexHash);
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}
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});
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});
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</script>
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</head>
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<body>
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<p><textarea id="rawData"></textarea></p>
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<p><input type="text" id="hash"></p>
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</body>
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</html>
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```天気予報が変わるまでは、同じハッシュが返ります。
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キャッシュをクリアしても同じ値になるので、同じJSONだと確認できます。
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