Motyar's Blog

Google Map Scraper using Google Places API PHP

noreply@blogger.com (bbbbbb) — Fri, 30 Nov 2018 08:44:00 +0000

Step 1: Get an API key

You can get a key from Google Cloud Platform Console, You ll have to select a product, and set up a billing account if not already done.

Step 2: Write the code

You can use *Nearby search*, here is a quick example of the call:

https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=-33.8670522,151.1957362&radius=1500&type=restaurant&keyword=cruise&key=YOUR_API_KEY

It ll return the data in JSON, you can convert that using json_decode.

Here is a quick example code:


$jsonData = file_get_contents($apiUrl);                                
$data = json_decode($jsonData,true);

In this data, you ll get PlaceId, You can further get full details about that place using Place details API: Here is an example:

https://maps.googleapis.com/maps/api/place/details/json?placeid=ChIJN1t_tDeuEmsRUsoyG83frY4&fields=name,rating,formatted_phone_number&key=YOUR_API_KEY

Demo

Refresh element without page refresh.

noreply@blogger.com (bbbbbb) — Thu, 03 Aug 2017 01:04:00 +0000

Here is the code ( using jQuery) to refresh a div contents without page refresh.


setInterval(function(){ 
    $('#divId').load('?_=' + (new Date()).getTime()+' #divId');
},5000);

You can add this simple animation to make it more effective


setInterval(function(){                         
        $('#divId').fadeOut('fast', function() {       
            $('#divId').load('?_=' + (new Date()).getTime()+' #divId',function() {
                                $(this).fadeIn('fast');                                                                                        
            });                                     
        });                                         
    },5000);

Auto versioning JavaScript and CSS files with PHP

noreply@blogger.com (bbbbbb) — Mon, 24 Jul 2017 05:58:00 +0000

While development stage, sometimes files get updated but browser doesn't reload the latest version of CSS and JS file and keep showing the cached version.

We can force to reload CSS and JS files by using current timestamp with the filepath, but its not a good idea to reaload files when nothing got changed.

Sharing a very simple hack that can be used to only reload the latest version when the files get changed.


path_to_js_or_css_file?<?=filemtime('path_to_js_or_css_file')?>

Using TOR is easy

noreply@blogger.com (bbbbbb) — Thu, 30 Mar 2017 16:11:00 +0000

Note: This tutorial is for macOS only.

Step 1. Install Homebrew

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Step 2. Install TOR

brew install tor

Step 3. Use this shell script. Save this to tor.sh source


#!/usr/bin/env bash

# 'Wi-Fi' or 'Ethernet' or 'Display Ethernet'
INTERFACE=Wi-Fi

# Ask for the administrator password upfront
sudo -v

# Keep-alive: update existing `sudo` time stamp until finished
while true; do sudo -n true; sleep 60; kill -0 "$$" || exit; done 2>/dev/null &

# trap ctrl-c and call disable_proxy()
function disable_proxy() {
    sudo networksetup -setsocksfirewallproxystate $INTERFACE off
    echo "$(tput setaf 64)" #green
    echo "SOCKS proxy disabled."
    echo "$(tput sgr0)" # color reset
}
trap disable_proxy INT

# Let's roll
sudo networksetup -setsocksfirewallproxy $INTERFACE 127.0.0.1 9050 off
sudo networksetup -setsocksfirewallproxystate $INTERFACE on

echo "$(tput setaf 64)" # green
echo "SOCKS proxy 127.0.0.1:9050 enabled."
echo "$(tput setaf 136)" # orange
echo "Starting Tor..."
echo "$(tput sgr0)" # color reset

tor

Step 4. Make it "executable"

chmod +x tor.sh

Step 5. Run it

./tor.sh

Step 6. Test it
https://check.torproject.org/

Step 7. Tell me ( Optional )
I am on twitter @motyar

Long tail keyword generator

noreply@blogger.com (bbbbbb) — Sat, 25 Feb 2017 08:42:00 +0000

Search en·gine op·ti·mi·za·tion is all about keywords, Keyword Research is most important part of an SEO Campaign.

Longtail keywords are more important than keywords

Here are few long tails for keyword "HTML5 Video"

I wrote a PHP script that can generate all the longtail keywords just using the starting term.

Download "Long tail keyword generator" script for $39 now

Will send you code via email after the payment. If you have any questions, I am twitter @motyar

Golang Web Development with Examples

noreply@blogger.com (bbbbbb) — Fri, 24 Feb 2017 10:46:00 +0000

How fast Go ( Golang ) is growing?


http://www.tiobe.com/tiobe-index/

Because its open source and designed for building simple, fast, and reliable softwares.

Who is using Golang?
Check the list here https://github.com/golang/go/wiki/GoUsers

Writing Web Applications using Go
Go is a good language for building websites/web servers, Let's understand with few examples:-

1. Static Web Server in Go

2. Simple Hello Web Example

// hello-web.go
package main

import (
 "fmt"
 "net/http"
)

func main() {
 http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
  fmt.Fprintln(w, "hello web")
 })

 http.ListenAndServe(":8080", nil)
}

3. Register a Route / Path


// routes.go
package main

import (
 "fmt"
 "net/http"
)

func main() {
 
 http.HandleFunc("/hi/", func(w http.ResponseWriter, r *http.Request) {

  fmt.Fprintln(w, "Hi web")
 })

 http.ListenAndServe(":8080", nil)
}

Check more examples on Go Web Examples

Quick quotes generation Tool

noreply@blogger.com (bbbbbb) — Fri, 06 Jan 2017 04:53:00 +0000

Ever found a really interesting inspirations quotes and wanted to share?

No? really?

I had this feeling many times a day, so I suggested myself to “Scratch Your Own Itch” !

Here is the tool

Demo : - http://motyar.info/quotes/
Code :- https://github.com/motyar/quotes

How to use this?

Its easy, just put your quotes in this format

"Make your own Quotes ~ Motyar"

And hit ENTER

You ll be redirected to something like this http://motyar.info/quotes/Make%20your%20own%20Quotes%20~%20Motyar

You can edit it on this page if you make an typo etc, ( yes I used "contenteditatble")

Final result?

Whats next?

What if you can import quotes as png? or jpg? or can edit the font? or colors too? and backgroud?

Let me know what you think, I am on twitter as @motyar

Login with Facebook ( In 20 lines of PHP code )

noreply@blogger.com (bbbbbb) — Sun, 28 Aug 2016 14:24:00 +0000

Step 1: Click here to create a Facebook application.

Step 2: Configure App Id and App Secret and redirect url etc.

Here is the code you need to use.

IFTTT Hack: Save Pinterest pin Image to Dropbox

noreply@blogger.com (bbbbbb) — Thu, 31 Mar 2016 05:54:00 +0000

IFTTT is very helpful for automation. But few things are not possible because channels have few limitations, like Pinterest channel doesn't provide the pin Image Url.

Here we need to save the pin image when we like a pin.

In this post we are going to use Pinterest API to get ImageUrl using PinId.

Here is the hack
Go to Pinterest API explorer and get API access Token by clicking "Get Token". A popup window will open and you will be asked to "Allow".

Here is the script


$data = json_decode(file_get_contents("https://api.pinterest.com/v1/pins/".trim($_GET['pinId'])."/?access_token=TOKEN&fields=image"),true);
                                                                      
$imgUrl = $data['data']['image']['original']['url'];
header("Location:".$imgUrl);

Host this PHP script somewhere, lets say at http://example.com/pinterest.php

Create a new Recipe and put the "File URL" = http://example.com/pinterest.php?pinId={{PinID}}

Thats all !!!

Foreach in Golang ( golang foreach )

noreply@blogger.com (bbbbbb) — Thu, 10 Mar 2016 15:45:00 +0000

Sorry there is no foreach in Golang!

But using a for statement with range clause we can iterate through all entries of an array, slice, string or map, or values received on a channel.


for index,element := range someSlice {
  // index is the index where we are
  // element is the element from someSlice for where we are
}

You can simply ignore the index using _ like:-


for _,element := range someSlice {
  // element is the element from someSlice for where we are
}

Upgrade MongoDB to Latest Version on Linux

noreply@blogger.com (bbbbbb) — Fri, 04 Mar 2016 10:08:00 +0000

Here is quick process :-

Check your current version, using

mongo --version

Download latest version from website:-
Copy the URL to download, in my case it was https://fastdl.mongodb.org/linux/mongodb-linux-i686-3.2.3.tgz

>wget https://fastdl.mongodb.org/linux/mongodb-linux-i686-3.2.3.tgz

>tar -xvzf mongodb-linux-i686-3.2.3.tgz

>cp mongodb-linux-i686-3.2.3/bin/* /usr/bin/

Check if it worked:-

>mongo --version

Simple REST API client in Go ( Google Go )

noreply@blogger.com (bbbbbb) — Fri, 04 Mar 2016 04:23:00 +0000

After writting many Golang REST APIs, I realised need of a REST API client to test these APIs. Becuase CURL commands are complex.

Here is the code

Here is an example use case for Go JSON REST API with mongoDb database

List all the Pandas


go run client.go -url=https://rest-golangapi.rhcloud.com/pandas -method=get

Create new Panda


go run client.go -url=https://rest-golangapi.rhcloud.com/pandas/ -method=post -data='{"Name":"Name of Panda"}'

Delete existing Panda


go run client.go -url=https://rest-golangapi.rhcloud.com/pandas/{Id} -method=delete

Update existing Panda

go run client.go -url=https://rest-golangapi.rhcloud.com/pandas/{Id} -method=put -data='{"Name":"New name"}'

Optional Parameters in Go function

noreply@blogger.com (bbbbbb) — Tue, 17 Nov 2015 07:49:00 +0000

To add optional parameters in a Go function, we can use variadic arguments or variadic function.

See this example:- see this code in play.golang.org

Job queue example in Golang

noreply@blogger.com (bbbbbb) — Fri, 03 Jul 2015 08:16:00 +0000

What is a Job Queue?

A job queue, is a data structure maintained by job scheduler software containing jobs to run. Users submit their programs that they want executed, "jobs", to the queue for batch processing. The scheduler software maintains the queue as the pool of jobs available for it to run.

via Wikipedia

You can write highly concurrent Job queue system using Golang.
Here is the example code by @blackecaldwell


//
// Example of a simple job queue
//
// - Each job is a series of tasks.
// - We finish all of a job's tasks before moving onto the next one.
//
// Blake Caldwell
// http://blakecaldwell.net
// http://twitter.com/blakecaldwell
// 

package main

import (
 "fmt"
 "time"
)

// Run a job - blocks until the job is done
func runJob(jobQueue chan chan string, name string) {

 // our job is a series of tasks
 taskQueue := make(chan string)
 defer close(taskQueue)

 // Queue our tasks in the job queue
 jobQueue <- taskQueue

 // job queue made room for us - queue up each of our tasks
 fmt.Printf("Starting job %s\n", name)
 for i := 1; i <= 5; i++ {
  taskQueue <- fmt.Sprintf("%s: %d", name, i)
  time.Sleep(1000 * time.Millisecond)
 }
 fmt.Printf("Job %s done!\n\n", name)

}

func main() {

 // This is our job queue - a channel of channels. We write channels of tasks into it.
 jobQueue := make(chan chan string)
 defer close(jobQueue)

 // simulate multiple requests to use the job queue
 fmt.Println("Begin: Kicking off workers that want to use the job queue")
 go runJob(jobQueue, "A")
 go runJob(jobQueue, "B")
 go runJob(jobQueue, "C")
 fmt.Println("End: Kicking off workers that want to use the job queue\n")

 // this is just for the example - this would be handled differently in a real service
 remainingJobs := 3

 // handle each job in the queue
 for job := range jobQueue {

  // Execute each of the tasks
  for task := range job {
   fmt.Printf("Handling: %s\n", task)
  }

  // break out when done
  remainingJobs--
  if remainingJobs == 0 {
   break
  }

 }
}

Try this example Update: Here is an more detailed code by Nick Saika

Single Page Web Application using Golang and AngularJS

noreply@blogger.com (bbbbbb) — Tue, 16 Dec 2014 09:37:00 +0000

A single page application (SPA) is an application that intracts with server via RESTfull API using JavaScript code on Client side.

RESTfull API on Backend

This part is created using Golang on server, we are using MySql as database. Here is blog post about it REST API in Golang and code is hosted on Github here Github / motyar / restgomysql

Front-end AngularJS

Using AngularJS on front-end, BTW you can use jQuery or simple Ajax code too. Here is the application working live.

WaterMark Image with Golang

noreply@blogger.com (bbbbbb) — Fri, 26 Sep 2014 13:55:00 +0000

Go is powerful, Golang's package 'image' can be used to watermarning an image with another image.

Here is the code, I found on StackOverFlow:


package main

import (
    "image"
    "image/draw"
    "image/jpeg"
    "image/png"
    "os"
)

func main() {
    imgb, _ := os.Open("input.jpg")
    img, _ := jpeg.Decode(imgb)
    defer imgb.Close()

    wmb, _ := os.Open("watermark.png")
    watermark, _ := png.Decode(wmb)
    defer wmb.Close()

    offset := image.Pt(100, 100)
    b := img.Bounds()
    m := image.NewRGBA(b)
    draw.Draw(m, b, img, image.ZP, draw.Src)
    draw.Draw(m, watermark.Bounds().Add(offset), watermark, image.ZP, draw.Over)

    imgw, _ := os.Create("output.jpg")
    jpeg.Encode(imgw, m, &jpeg.Options{jpeg.DefaultQuality})
    defer imgw.Close()
}

REST

noreply@blogger.com (bbbbbb) — Sun, 21 Sep 2014 01:56:00 +0000

You have an URI ( its same as URL) that talks. Really?

Yes!

How?

Client ( Web Browser or CURL or HTTP client in code ) and sends a Request. Each HTTP request have a 'methods' parameter.

Server ( Where the URL points ) reads the HTTP.method and can behave according to that.

Method may be GET , POST, PUT or DELETE, Server performs actions according to the Method and Returns result data (JSON, XML etc).

RESTful API for MySQL in Go

noreply@blogger.com (bbbbbb) — Fri, 12 Sep 2014 02:01:00 +0000

Most of the mobile and webapp uses REST APIs these days. Client side code uses CURD operations to READ, WRITE, UPDATE and DELETE etc.

The backend of REST APIs can be written with GO ( golang ).

You can use http.NewServeMux() to handle path and to decide what to serve.

http.HandlerFunc can define which function will handle the http.Request.

In this function we can check what type of request.Method it is, code can act accordingly ( READ, WRITE, DELETE or UPDATE database) and write back the output (in JSON) to
http.ResponseWriter

I have shared the code on Github / motyar / restgomysql Feel free to fork and improve.

You can discuss more on Reddit here.

Creating Static WebServer in Go ( golang )

noreply@blogger.com (bbbbbb) — Mon, 08 Sep 2014 13:03:00 +0000

I am learning golang, I have go through the golang tour

I found it a very easy and fast language for web backend.

In this post I want to share a very simple static file server we can create in few line of Go (golang)

Here is the code you have to put in server.go ( or any name dot go)


package main                                                          
                                                                      
import (                                                              
    "log"                                                             
    "net/http"                                                        
)                                                                     
                                                                      
func main() {                                                         
    // Simple static webserver:                                       
    log.Fatal(http.ListenAndServe(":8080", http.FileServer(http.Dir("."))))                                                                           
}

You can change the dot with any path or dir that you want to server on port 8080.
Port can be anything too. Run this code like this


go run server.go

Now open http://localhost:8080/ or http://IPofYourVPN:8080

REST APIs for your MEAN Stack Application

noreply@blogger.com (bbbbbb) — Wed, 20 Aug 2014 01:43:00 +0000

You can use JavaScript throughout your stack. This is called MEAN stack: MongoDB, ExpressJS, AngularJS, and Node.js.

MongoDB as Database, ExpressJS for routing and HTTP server, All logic on beckend in Node.js, and AngularJS on front end to Handle REST APIs and Client side routing.

In this post we are going to write the beck-end part for a simple MEAN stack app, REST APIs to handle data.

Pandas in bamboo farm

REST API using NodeJS, Express and MongoDB.

Installation

You must have MongoDB and NodeJS installted on your server.


    git clone https://github.com/motyar/rest_api_mean
    cd rest_api_mean
    npm install
    node server.js

Nothing but (cute) Pandas

GET /api/pandas to get all the pandas.
GET /api/pandas/panda_id to get that panda's info
POST /api/pandas to add new panda
DELETE /api/pandas/panda_id to remove that one panda.
PUT /api/pandas/panda_id to update details

Tools

You can use HurlIt to test REST APIs.

Whats next?

Stay tuned, we will be working on front end of this app, using AngularJS.

You can hire me for your next fullstack JavaScript application, I am available

Xml2Json in JavaScript

noreply@blogger.com (bbbbbb) — Mon, 04 Aug 2014 07:45:00 +0000

Here is the simple function via DWB (DavidWalshBlog). You can use to convert XML to JSON in your JavaScript code.


// Changes XML to JSON
function xmlToJson(xml) {
 
 // Create the return object
 var obj = {};

 if (xml.nodeType == 1) { // element
  // do attributes
  if (xml.attributes.length > 0) {
  obj["@attributes"] = {};
   for (var j = 0; j < xml.attributes.length; j++) {
    var attribute = xml.attributes.item(j);
    obj["@attributes"][attribute.nodeName] = attribute.nodeValue;
   }
  }
 } else if (xml.nodeType == 3) { // text
  obj = xml.nodeValue;
 }

 // do children
 if (xml.hasChildNodes()) {
  for(var i = 0; i < xml.childNodes.length; i++) {
   var item = xml.childNodes.item(i);
   var nodeName = item.nodeName;
   if (typeof(obj[nodeName]) == "undefined") {
    obj[nodeName] = xmlToJson(item);
   } else {
    if (typeof(obj[nodeName].push) == "undefined") {
     var old = obj[nodeName];
     obj[nodeName] = [];
     obj[nodeName].push(old);
    }
    obj[nodeName].push(xmlToJson(item));
   }
  }
 }
 return obj;
};

How to parse XML in Angular JS

noreply@blogger.com (bbbbbb) — Mon, 04 Aug 2014 06:17:00 +0000

Still many webServices and REST APIs provide output in XML, AngularJS doent work with XML data.

We are going to use x2js, to convert XML data to JSON object. All other code will not be effected any way.

We are going to parse this XML sample file
Here is very basic example code.

Making MongoDB and MySql run simultaneously on Ubuntu

noreply@blogger.com (bbbbbb) — Thu, 24 Jul 2014 10:28:00 +0000

I am using a linux VPS for development. Was using it for PHP application, but as I started with NodeJS, I installed MongoDB on it.

Everything was working well but suddenly MySql stopped working.

I checked the and found this error

/usr/sbin/mysqld: Can't create/write to file '/tmp/ibAJK' (Errcode: 13)

Solution?

Following commands solved the issue, I think it was a permission problem.


chown root:root /tmp
chmod 1777 /tmp
service mysql start

But I got this error in mongoDB log

locale::facet::_S_create_c_locale name not valid

Solution? Yes, Run this command in terminal:


export LC_ALL=C
mongod --fork --logpath /var/log/mongodb.log

Now both MongoDB and MySql are running on my VPS.

Installing and running MondoDB on Ubuntu / Linux

noreply@blogger.com (bbbbbb) — Thu, 10 Jul 2014 04:57:00 +0000

Installation:-


sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10

echo 'deb http://downloads-distro.mongodb.org/repo/ubuntu-upstart dist 10gen' | sudo tee /etc/apt/sources.list.d/10gen.list

sudo apt-get update && sudo apt-get install mongodb-10gen

Change configurations:-


vi /etc/mongodb.conf

Check for error/logs:-


tail -f /var/log/mongodb/mongodb.log

Create the dbpath dir if not exists, and give permissions:-


sudo chown -R mongodb:mongodb /root/data/db

Start mongod as a Daemon:-


mongod --fork --logpath /var/log/mongodb.log

Ref - http://docs.mongodb.org/manual/tutorial/manage-mongodb-processes/

Simple Todo app: Using AngularJS and REST APIs

noreply@blogger.com (bbbbbb) — Wed, 09 Jul 2014 10:21:00 +0000

While learning AngularJs, I read many tutorials, watched few videos. I found Angular so fast and as its MVVC, Your code is clean easy to understand.

As most of my work is related to REST APIs, I wrote this simple example of Todo app, that:-

1. Fetches Todos from API and displays them in list. GET call.
2. Can add Todo to Server Database using POST call.
3. Can delete Todo from Server Database using DELETE call.
4. Basic Search using filter.

Here is the working demo.

The code is hosted on Github, you can check here. Feel free to get back to me about any help you need about the code.