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在 PHP 中，$id 變數(shù)應(yīng)該從客戶端接收一個(gè)整數(shù)值。但是，當(dāng)客戶端使用POST請(qǐng)求方法將id值作為整數(shù)傳送到PHP腳本時(shí)，當(dāng)腳本上傳到WAMP伺服器時(shí)，它會(huì)自動(dòng)轉(zhuǎn)換為PHP中的字串類型。另一方面，當(dāng)腳本上傳到Bluehost伺服器上時(shí)，id值仍然是整數(shù)，不會(huì)轉(zhuǎn)換為字串，這正是我想要的。

這是一個(gè)簡(jiǎn)單的 PHP 腳本：

<?php

$id = $_POST["id"];

if (is_int($id))
    echo "It is integer"; // It will print this if the PHP script was uploaded to the Bluehost server.
else if (is_string($id))
    echo "It is string"; // It will print this if the PHP script was uploaded to the WAMP server.

從客戶端發(fā)送的 id 值是透過 Android 應(yīng)用程式發(fā)送的，這就是我將 id 值發(fā)送到 PHP 腳本的方式：

RetrofitManager 類別

public class RetrofitManager {

    private static RetrofitManager.Api api;

    public static RetrofitManager.Api getApi() {
        if (api == null)
            api = new Retrofit.Builder()
                .baseUrl("http://192.151.5.721/API/")
                .client(new OkHttpClient.Builder().readTimeout(3, TimeUnit.MINUTES).writeTimeout(3, TimeUnit.MINUTES).connectTimeout(25, TimeUnit.SECONDS).build())
                .addConverterFactory(GsonConverterFactory.create())
                .addCallAdapterFactory(RxJava3CallAdapterFactory.create())
                .build()
                .create(Api.class);

        return api;
    }

    public interface Api {

        @FormUrlEncoded
        @POST("Countries/Get.php")
        Single<CountryModelResponse> getCountries(@Field("id") int countryId);

    }

}

CountriesRepository 類別

public class CountriesRepository {

    public LiveData<Object> getCountries(Context context) {
        MutableLiveData<Object> mutableLiveData = new MutableLiveData<>();
        PublishSubject<String> retrySubject = PublishSubject.create();

        RetrofitManager.getApi().getCountries(Navigation.findNavController(MainActivity.activityMainBinding.activityMainFragmentContainerViewContainer).getPreviousBackStackEntry() == null ? SharedPreferencesManager.getIntegerValue(context, SharedPreferencesManager.Keys.COUNTRY_ID.name()) : -1)
            .subscribeOn(Schedulers.io())
            .observeOn(AndroidSchedulers.mainThread())
            .doOnSubscribe(mutableLiveData::setValue)
            .doOnError(throwable -> {
                LinkedHashSet<Object> linkedHashSet = new LinkedHashSet<>();
                linkedHashSet.add(!Utils.isInternetConnected(context) ? 100 : throwable instanceof SocketTimeoutException ? 200 : 300);
                linkedHashSet.add(retrySubject);
                mutableLiveData.setValue(linkedHashSet);
            })
            .retryWhen(throwableFlowable -> throwableFlowable.flatMap(throwable -> retrySubject.toFlowable(BackpressureStrategy.DROP).take(1), (throwable, s) -> s))
            .subscribe(countryModelResponse -> {
                if (countryModelResponse.getRequestStatus() == 100)
                    mutableLiveData.setValue(countryModelResponse);
                else {
                    LinkedHashSet<Object> linkedHashSet = new LinkedHashSet<>();
                    linkedHashSet.add(300);
                    linkedHashSet.add(retrySubject);
                    mutableLiveData.setValue(linkedHashSet);
                }
            });

        return mutableLiveData;
    }

}

我不確定為什麼兩臺(tái)伺服器之間會(huì)出現(xiàn)這種行為差異。

我正在使用最新版本的 PHP 和 WAMP 伺服器。