Java – user registration page not verified

<?PHP
    	
       

    $name = $_POST["name"];
    $age = $_POST["age"];
    $email = $_POST["email"];
    $password =$_POST["password"];

    $statement = MysqLi_prepare($db, "INSERT INTO user_info(name,age,email,password) 
    VALUES
    (?,?,?,?)");  
    MysqLi_stmt_bind_param($statement, "siss", $name, $age, $email, $password);
    MysqLi_stmt_execute($statement);
     
      if($statement>0){
               $response["success"] = 1;
             }    
         else{
               $response["success"] = 0;
             }
        
         echo json_encode($response);



    ?>

My user registration page doesn't want to verify. Please suggest which side of the code between PHP text file and Android side will allow verification. Please help further. This is the code

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

final EditText Name = (EditText) findViewById(R.id.edtName);
final EditText Age = (EditText) findViewById(R.id.edtAge);
final EditText Email = (EditText) findViewById(R.id.edtUsername);
final EditText Password = (EditText) findViewById(R.id.edtPassword);
final ImageButton validate = (ImageButton) findViewById(R.id.btnReg);

validate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
final int age = Integer.parseInt(Age.getText().toString());
final String name = Name.getText().toString();
final String email = Email.getText().toString();
final String password = Password.getText().toString();


Name.setText("");
Age.setText("");
Email.setText("");
Password.setText("");

                                                                         Response.Listener<String>responseListener=new                                    Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONObject jsonResponse = new JSONObject(response);
boolean success = jsonResponse.getBoolean("success");
if (success) {
Intent intent = new Intent(Register.this, Login.class);
Register.this.startActivity(intent);
} else {
AlertDialog.Builder builder = new AlertDialog.Builder(Register.this);
builder.setMessage("Register Failed")
.setNegativeButton("Retry", null)
.create()
.show();
}
} catch (JSONException e) {
e.printStackTrace();
}
}
};
RegisterRequest registerRequest = new RegisterRequest(name, age, email,  password, responseListener);
RequestQueue queue = Volley.newRequestQueue(Register.this);
queue.add(registerRequest);
}
});
}

public void extBtn(View view) {
Intent intent = new Intent(this, MainActivity.class);
startActivity(intent);
}
}

resolvent:

Try this Code:

$bind = MysqLi_stmt_bind_param($statement, "siss", $name, $age, $email, $password);
$execute = $bind->MysqLi_stmt_execute($bind);

 if(count($execute) > 0){
     $response["success"] = 1;
 } else{
     $response["success"] = 0;
 }       

 echo json_encode($response);

Counting is the calculation of rows in a database