Android — Как написать LIKE заявление в PHP Query?

Я создаю приложение, которое может извлечь слово, используя последнюю букву введенного слова. Например, в моем случае в моей существующей базе данных последовательность Applе > ЕlephanT > TраиN > NERVе > ЕducatioN > Newspapeр > и я введу рecipe, потому что это последняя буква предыдущего слова. Моя проблема в том, что я не могу получить ответ. Приложение должно дать слово, которое начинается с последней буквы предыдущего слова. Таким образом, в tblcheckword ответ должен быть Емфазис или Еmpire, потому что в моем запросе он находится в rand () и LIMIT до 1

SELECT word FROM tblcheckword WHERE word LIKE '$word.%' ORDER BY rand() NOT IN (SELECT ig_word FROM tbltempgame) LIMIT 1;

Я использую оператор LIKE для получения последней буквы введенного слова. Но опять я все равно получаю ошибку.

Вот мой PHP-файл «checkplsv2.php»

<?php
$con = mysqli_connect("localhost", "root", "1234", "check") or die ("Error ".mysqli_error($con));
$word = $_POST["word"];
$sql = "SELECT word FROM tblcheckword where word like '$word.%' order by rand() not in (select ig_word from tbltempgame) LIMIT 1";
$result = mysqli_query($con, $sql) or die("Error in selecting ".mysqli_error($con));

$response = array();
if(mysqli_num_rows($result) > 0){
while($row = mysqli_fetch_array($result))
{
array_push($response, array("id"=>$row[0],"ig_word"=>$row[1],"meaning"=>$row[2]));
$retrieve = $row[1];
}
echo json_encode(array("server_response" => $retrieve));
}else{
echo "Retrieve failed";
}

mysqli_close($con);?>

Вот мой MainActivity.java

package com.example.keam.lastnato;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;

public class MainActivity extends Activity {

String id;
String word;
String ig_word;
InputStream is = null;
String result = null;
String line = null;
String data = "";
TextView disp;
String url = "http://192.168.22.16/checkplsv2.php";

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

final EditText e_word = (EditText) findViewById(R.id.editText1);
Button select = (Button) findViewById(R.id.button1);
select.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
word = e_word.getText().toString();
select();
}
});
}

void select() {

class readThis extends AsyncTask<String, Void, String> {

@Override
protected String doInBackground(String... params) {

ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();

nameValuePairs.add(new BasicNameValuePair("word", word));

try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(params[0]);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
Log.e("pass 1", "connection success ");
} catch (Exception e) {
Log.e("Fail 1", e.toString());
Toast.makeText(getApplicationContext(), "Invalid IP Address",
Toast.LENGTH_LONG).show();
}

try {
BufferedReader reader = new BufferedReader
(new InputStreamReader(is, "iso-8859-1"), 8);

StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null) {
sb.append(line);
}
is.close();
result = sb.toString();
Log.e("pass 2", "connection success ");
} catch (Exception e) {
Log.e("Fail 2", e.toString());
}return result;
}

@Override
protected void onPostExecute(String result) {

try {
JSONObject json_data = new JSONObject(result);
ig_word = json_data.getString("server_response");
Toast.makeText(getBaseContext(), "Name: " +
ig_word,Toast.LENGTH_SHORT).show();
TextView disp = (TextView) findViewById(R.id.textView);
disp.setText(ig_word);

} catch (JSONException e) {
Log.e("Fail 3", e.toString());
Log.e("log_tag", "Failed data was: " + result);
}

}

@Override
protected void onPreExecute() {
}

@Override
protected void onProgressUpdate(Void... values) {
}

}

readThis hello = new readThis();
hello.execute(new String[]{url});
}
}

Вот мой Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.keam.lastnato.MainActivity">

<EditText
android:id="@+id/editText1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_alignParentTop="true"android:layout_centerHorizontal="true"android:layout_marginTop="39dp"android:padding="11dp"android:hint="Player's Turn"android:ems="10"android:inputType="text">

<requestFocus />
</EditText>

<Button
android:id="@+id/button1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_below="@+id/editText1"android:layout_centerHorizontal="true"android:layout_marginTop="24dp"android:onClick="parseJSON"android:padding="11dp"android:text="Select" />

<TextView
android:layout_width="wrap_content"android:layout_height="wrap_content"android:text="New Text"android:id="@+id/textView"android:layout_centerVertical="true"android:layout_centerHorizontal="true" />
</RelativeLayout>

Вот мое tblcheckword и tbltempgame в WAMP phpmyadmin

Имя базы данных = «проверка»

Вот моя ошибка logcat.

09-04 19:23:52.051 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:23:52.051 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:23:52.051 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.media.session.MediaController', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:23:52.051 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.widget.Toolbar', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:23:52.061 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.app.ActivityManager$TaskDescription', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:23:52.071 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.app.SharedElementCallback', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:23:52.071 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:23:52.071 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.app.SharedElementCallback', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:23:52.081 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.app.assist.AssistContent', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:23:52.091 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.view.SearchEvent', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:23:52.091 11820-11820/com.example.keam.lastnato E/dalvikvm: Could not find class 'android.os.PersistableBundle', referenced from method com.example.keam.lastnato.MainActivity.access$super
09-04 19:24:01.960 11820-12003/com.example.keam.lastnato E/pass 1: connection success
09-04 19:24:01.960 11820-12003/com.example.keam.lastnato E/pass 2: connection success
09-04 19:24:01.960 11820-11820/com.example.keam.lastnato E/Fail 3: org.json.JSONException: Value Retrieve of type java.lang.String cannot be converted to JSONObject
09-04 19:24:01.960 11820-11820/com.example.keam.lastnato E/log_tag: Failed data was: Retrieve failed