Shin's PHP

Friday 7 October 2016

Android - libGL error: unable to load driver: nouveau_dri.so

Hello,

This is the error you might see:

Cannot launch AVD in emulator.
Output:
libGL error: unable to load driver: nouveau_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: nouveau
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
X Error of failed request:  GLXBadContext
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  6 (X_GLXIsDirect)
  Serial number of failed request:  49
  Current serial number in output stream:  48
libGL error: unable to load driver: nouveau_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: nouveau
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
X Error of failed request:  GLXBadContext
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  6 (X_GLXIsDirect)
  Serial number of failed request:  49
  Current serial number in output stream:  48

Here is how to resolve it:

sudo apt-get install lib64stdc++6 (if it is not installed)
cd ~/Android/Sdk/tools/lib64/libstdc++
mv libstdc++.so.6 libstdc++.so.6.original
ln -s /usr/lib64/libstdc++.so.6 ~/Android/Sdk/tools/lib64/libstdc++
sudo apt-get install mesa-utils (if it is not installed)

Source: http://android.stackexchange.com/questions/145437/reinstall-avd-on-ubuntu-16-04

Good luck!

Thursday 29 September 2016

Magento 2 - Owl Carousel makes wrapper a few thousand pixels wide at 767px and below

Hi,

We can solve this issue by multiple way:

http://magento.stackexchange.com/questions/105638/owl-carousel-magento-2-not-fully-responsive

.columns .column.main {
    overflow: hidden;
}

.columns .column.main {
    width: 100%;
}

Another solution I found:

```
.columns {
    display: block;
}
```

Good luck!

Wednesday 10 August 2016

Ubuntu - ReactJS with Hot Loader Installation

Hi there,

This is an example for ReactJS with Hot Loader:

You must have NodeJS installed:

https://nodejs.org/en/download/package-manager/#debian-and-ubuntu-based-linux-distributions

Running these commands:

npm init
npm install -S express lodash react react-dom
npm install babel-core babel-loader babel-preset-es2015 babel-preset-react react-hot-loader webpack webpack-dev-server --save-dev
npm install -g webpack webpack-dev-server

Create webpack-dev-server global command in case it not works:

Create bash file bash.sh:

#!/bin/bash

path=$(readlink -f .)
path="$path/node_modules/.bin/webpack-dev-server"

sudo ln -s $path /usr/local/bin
echo "DONE!";

sudo bash.sh

Create webpack.config.js file:

var webpack = require('webpack');
var path = require('path');

module.exports = {
    devtool: 'inline-source-map',
    entry: [
        'webpack-dev-server/client?http://127.0.0.1:8080/',
        'webpack/hot/only-dev-server',
        './src'
    ],
    output: {
        path: path.join(__dirname, 'public/build'),
        filename: 'bundle.js',
        sourceMapFilename: 'bundle.map',
        publicPath: '/'
    },
    resolve: {
        modulesDirectories: ['node_modules', 'src'],
        extensions: ['', '.js']
    },
    module: {
        loaders: [
        {
            test: /\.jsx?$/,
            exclude: /node_modules/,
            loaders: ['react-hot', 'babel?presets[]=react,presets[]=es2015']
        }
        ]
    },
    plugins: [
        new webpack.HotModuleReplacementPlugin(),
        new webpack.NoErrorsPlugin()
    ],
    devServer: {
        contentBase: "./public",
        hot: true
    }
};

Create index.html file:

<html>
    <head>
        <title>React</title>
    </head>
    <body>
        <div id="app"></div>

        <script src="build/bundle.js"></script>
    </body>
</html>

Create index.js file:

import React from 'react';
import { render } from 'react-dom';
import App from 'components/app';

render(<App />, document.getElementById('app'));

Create app.js file:

import React from 'react';

export default class App extends React.Component {
    render() {
        return (
            <div>
                <h1>Hello world!</h1>
            </div>
        );
    }
}

At the end, you might have a directory tree like this:

Rebuild:

webpack

Run server:

webpack-dev-server
or
node_modules/.bin/webpack-dev-server

Open web browser:

http://localhost:8080/

Good luck!

Thursday 4 August 2016

Magento - Installation

Hello,

I got these issues when trying to setup Magento in my local machine using Nginx:

Magento 2.x:

Cannot instantiate interface

FastCGI sent in stderr: "PHP message: PHP Fatal error: Cannot instantiate interface Magento\Framework\App\Config\Scope\ReaderPoolInterface in /xxx/vendor/magento/framework/ObjectManager/Factory/Dynamic/Developer.php on line 73" while reading response header from upstream, client: 127.0.0.1, server: my-magento.com, request: "GET / HTTP/1.1", upstream: "fastcgi://unix:/run/php/php5.6-fpm.sock:", host: "my-magento.com"
Modify the sample nginx config file you have been included in your virtual host:

From:

location ~* ^/setup($|/) {

location /setup {

security.limit_extensions

"Access to the script '/xxx/setup/index.php/session/prolong' has been denied (see security.limit_extensions)"

Change

cgi.fix_pathinfo=0

cgi.fix_pathinfo=1

Magento 1.x:

Nginx:

Virtual host file:

location ~ .php/ {
 rewrite ^(.*.php)/ $1 last;
}

Good luck!

Wednesday 3 August 2016

Ubuntu - Swap between PHP 5.5, 5.6 and 7.0

Hello,

This is tutorial how we can do it:

Install PHP 5.5:

sudo apt-get install -y php5

Install PHP 5.6:

sudo add-apt-repository ppa:ondrej/php

In some case, you will need to change Ubuntu codename in this file:

sudo vim /etc/apt/sources.list.d/ondrej-ubuntu-php-xenial.list

sudo apt-get update
sudo apt-get install -y php5.6

Install PHP 7.0:

sudo apt-get install -y php7.0

Create symlink in your .bashrc file for quick access:

vim ~/.bashrc
Apache2:

#################################################
############### PHP Version Toggle ##############
#################################################
# Remove the -q to see debugging information if there are problems
alias enphp5.5="
 sudo a2dismod php5.6 -q;
 sudo a2dismod php7.0 -q;
 sudo a2enmod php5 -q;
 sudo ln -sf /usr/bin/php5 /usr/bin/php;
 sudo service apache2 restart"
alias enphp5.6="
 sudo a2dismod php5 -q;
 sudo a2dismod php7.0 -q;
 sudo a2enmod php5.6 -q;
 sudo ln -sf /usr/bin/php5.6 /usr/bin/php;
 sudo service apache2 restart"
alias enphp7.0="
 sudo a2dismod php5 -q;
 sudo a2dismod php5.6 -q;
 sudo a2enmod php7.0 -q;
 sudo ln -sf /usr/bin/php7.0 /usr/bin/php;
 sudo service apache2 restart"

Nginx:

Remove apache2:

sudo service apache2 stop
sudo apt-get remove apache2*
sudo apt-get purge apache2

Install php-fpm for all versions

sudo apt-get install php5-fpm
sudo apt-get install php5.6-fpm
sudo apt-get install php7.0-fpm

Stop all php-fpm:

sudo service php5-fpm stop
sudo service php5.6-fpm stop
sudo service php7.0-fpm stop

#################################################
############### PHP Version Toggle ##############
#################################################
# Remove the -q to see debugging information if there are problems
alias enphp5.5="
 sudo ln -sf /usr/bin/php5 /usr/bin/php;
 sudo service php5.6-fpm stop;
 sudo service php7.0-fpm stop;
 sudo service php5-fpm start;
 sudo find /etc/nginx/sites-available -type f -exec sed -i 's,/run/php/php5.6-fpm.sock,/var/run/php5-fpm.sock,g;s,/run/php/php7.0-fpm.sock,/var/run/php5-fpm.sock,g' {} \;
 sudo service nginx restart"
alias enphp5.6="
 sudo ln -sf /usr/bin/php5.6 /usr/bin/php;
 sudo service php5-fpm stop;
 sudo service php7.0-fpm stop;
 sudo service php5.6-fpm start;
 sudo find /etc/nginx/sites-available -type f -exec sed -i 's,/var/run/php5-fpm.sock,/run/php/php5.6-fpm.sock,g;s,/run/php/php7.0-fpm.sock,/run/php/php5.6-fpm.sock,g' {} \;
 sudo service nginx restart"
alias enphp7.0="
 sudo ln -sf /usr/bin/php7.0 /usr/bin/php;
 sudo service php5-fpm stop;
 sudo service php5.6-fpm stop;
 sudo service php7.0-fpm start;
 sudo find /etc/nginx/sites-available -type f -exec sed -i 's,/var/run/php5-fpm.sock,/run/php/php7.0-fpm.sock,g;s,/run/php/php5.6-fpm.sock,/run/php/php7.0-fpm.sock,' {} \;
 sudo service nginx restart"

Reload your new .bashrc commands:

source ~/.bashrc

Done, now you can try it with:

enphp5.5
php -v
enphp5.6
php -v
enphp7.0
php -v

Good luck!

Source: https://github.com/JREAM/phalcon-xenial

Friday 29 July 2016

Android - Websocket

Hi,

This is tutorial how to integrate WebSocket with Android. We need 3 different files:

WebSocketTask.java

import android.content.Context;
import android.os.AsyncTask;
import android.util.Log;

import org.java_websocket.client.WebSocketClient;
import org.java_websocket.handshake.ServerHandshake;
import org.json.JSONException;
import org.json.JSONObject;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.concurrent.ExecutionException;

public class WebSocketTask extends AsyncTask {
    public boolean isConnected = false;

    private WebSocketClient webSocketClient;
    private ICallback iCallback;

    public WebSocketTask(Context context) {
        this.iCallback = (ICallback) context;
    }

    @Override    protected WebSocketClient doInBackground(String... params) {
        final String channel = params[0];
        URI uri;

        try {
            uri = new URI("ws://your-websocket-server.com");
        } catch (URISyntaxException e) {
            e.printStackTrace();
            return null;
        }

        webSocketClient = new WebSocketClient(uri) {
            @Override            public void onOpen(ServerHandshake serverHandshake) {
                isConnected = true;

                JSONObject message = new JSONObject();
                try {
                    message.put("channel", channel);
                    message.put("subscribe", true);
                } catch (JSONException e) {
                    e.printStackTrace();
                }
                webSocketClient.send(message.toString());
            }

            @Override            public void onMessage(String s) {
                try {
                    JSONObject data = new JSONObject(s);

                    if (data.has("channel")) {
                        iCallback.webSocketCallback(data);
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                } catch (InterruptedException e) {
                    e.printStackTrace();
                } catch (ExecutionException e) {
                    e.printStackTrace();
                }
            @Override            public void onClose(int i, String s, boolean b) {
                Log.i("Websocket", "Closed " + s);
            }

            @Override            public void onError(Exception e) {
                Log.i("Websocket", "Error " + e.getMessage());
            }
        };
        webSocketClient.connect();

        return webSocketClient;
    }

    public void sendMessage(WebSocketClient client, String channel, JSONObject message) throws JSONException {
        JSONObject data = new JSONObject();

        data.put("channel", channel);
        data.put("data", message);

        client.send(data.toString());
    }
}

ICallback.java

import org.json.JSONException;
import org.json.JSONObject;

import java.util.concurrent.ExecutionException;

public interface ICallback {
    void webSocketCallback(JSONObject data) throws JSONException, ExecutionException, InterruptedException;
}

MainActivity.java

import android.os.Bundle;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;

import org.java_websocket.client.WebSocketClient;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.concurrent.ExecutionException;

public class MainActivity extends AppCompatActivity implements ICallback {

    WebSocketTask webSocketTask;
    WebSocketClient webSocketBattleChannel;

    String myChannelKey = "my-channel";

    @Override
    protected void onDestroy() {
        super.onDestroy();

        webSocketTask.cancel(true);
    }

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

        // New websocket task
        webSocketTask = new WebSocketTask(this);
        try {
            // Connect to websocket channel
            webSocketBattleChannel = webSocketTask.execute(myChannelKey).get();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } catch (ExecutionException e) {
            e.printStackTrace();
        }
    }

    // Send message to other users
    private void sendMessage(JSONObject data, boolean isDoubleSend) throws JSONException {
        final JSONObject message = data;

        // Check the websocket connection
        if (webSocketTask.isConnected) {
            webSocketTask.sendMessage(webSocketBattleChannel, myChannelKey, message);
        }

        // Try to double send in some case of connection lost
        if (webSocketTask.isConnected && isDoubleSend) {
            Handler handler = new Handler();
            handler.postDelayed(new Runnable() {
                public void run() {
                    try {
                        webSocketTask.sendMessage(webSocketBattleChannel, myChannelKey, message);
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            }, 1000);
        }
    }

    // Listen to other users send message
    @Override
    public void webSocketCallback(JSONObject message) throws JSONException {
        // Get data in the message
        final JSONObject data = message.getJSONObject("data");

        // To make sure we can modify view
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Log.d("WebSocket", data.toString());
            }
        });
    }
}

Done. We simply use it by 2 functions:

sendMessage:

Send message to who listen to channel: my-channel

webSocketCallback:

Listen to channel: my-channel

Good luck!

Sunday 20 December 2015

Restoring Large MySQL Dump

Hello,

This is tutorial how to restore your Database:

Create dump file:

mysqldump -uroot -ppassword dbname > dbname_backup.sql

Split dump file:

mkdir splits
split -n 1000 dbname_backup.sql splits/sql

Create new database: dbname_clone
Restore database:

cd splits
cat sql* | mysql -uroot -ppassword dbname_clone

Good luck!