newbie looking for example

[Roni Segoly]

Hi

Can someone please show me an example for using Google chart in PHP web page while updating in a loop?
I have an example someone prepared for me using Ajax and JS, and all I need is addimg a bar chart to same page which will be updated same method.
If there is a better way to implement this it's even better
Design is irrelevant now.
Anyone?

Many thanks

[Andrew Gallant]

There are a ton of examples on this forum, if you search for them.  This thread has a large number to work with.

[Roni Segoly]

I saw many examples as well

This one is working
https://developers.google.com/chart/interactive/docs/php_example

But I need an example which is keep updating without refresh

Like  this page I use
http://yozmaportal.net/g.php

 

Roni Segoly 

+972-54-6466264

יוזמה פרויקטים חברתיים וסביבתיים בע"מ

Yozma - social & environmental projects

 

Google+ Page 

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[Andrew Gallant]

The PHP examples should show you how to construct the DataTable on the back-end.  If you set up a PHP page that echos the json version of the DataTable, you can use AJAX in javascript to call that page to refresh your data.

It looks like you page does something similar already, you're just not using the DataTable structure to transmit your data.  Perhaps it would help me to answer your question if you could explain what it is about your code that you want to function differently?

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[Roni Segoly]

I am newbie so need to go slowly

My page does what it needs to to do and here is the source
https://www.dropbox.com/s/x7gw7sqhuyxpqxq/g.php

Someone helped me before and with these 4 gauges it works fine

I need to add to my page another chart (bar) which is also updated same method

So one PHP with two charts (4 gauges and bar), updated from external source every X seconds

I can deal with PHP but have no knowledge of JS and Ajax

Thanks

 

Roni Segoly 

+972-54-6466264

יוזמה פרויקטים חברתיים וסביבתיים בע"מ

Yozma - social & environmental projects

 

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[Andrew Gallant]

Does your BarChart use the same data as the Gauges, or is it different data?

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[Roni Segoly]

I need for different data

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[Andrew Gallant]

I suggest making a PHP page that pulls your data from the database and serves up a json string representation of a DataTable, as shown in the other thread.  When you have a PHP page that can serve up the data, I'll help you work through the javascript to hook the data up to a chart.

[Roni Segoly]

Thanks

you mean like in the example here?
https://developers.google.com/chart/interactive/docs/php_example

That's the easy part as even in my page the data comes from a server as  a string

Although I used simple format values separated by comma
885,514,1061,0

function get_data()

{

    $homepage = file_get_contents('http://212.150.200.169:84/read_g_gauges.php/');

    return $homepage;

  

}

I know for gauges I need a number for every gauge

What do I need for bar? Assuming I have 3, just three numbers?

 

Roni Segoly 

+972-54-6466264

יוזמה פרויקטים חברתיים וסביבתיים בע"מ

Yozma - social & environmental projects

 

Google+ Page 

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[Andrew Gallant]

The BarChart needs a DataTable with at least two columns of data: 1 for the y-values and 1 for each data series.  You can take a similar approach to your existing Gauges and just update a DataTable with the new values, in which case I suspect that your system of using a comma-separated list would be fine.