PHP - Reading Binary Data

OK, so I am trying to read exif data from images and have come up against a snag that I cannot see the answer to. I know that what I have at present is pretty basic, but I want to be sure that I know how to access the bits I want before tidying it up into something more sophisticated. The coide I have is this:-

Code: [Select]
$exif = exif_read_data('brass jaw.jpg', 'EXIF');

$name = $exif['FileName'];
$height = $exif['ExifImageWidth'];
$width = $exif['ExifImageLength'];
$model = $exif['Model'];
$exposuretime = $exif['ExposureTime'];
$fnumber = $exif['FNumber'];
$iso = $exif['ISOSpeedRatings'];
$date = $exif['DateTime'];

echo "File Name: $name<br />";
echo "Height: $height<br />";
echo "Width: $width<br />";
echo "Camera: $model<br />";
echo "Shutter Speed: $exposuretime<br />";
echo "F number: $fnumber<br />";
echo "ISO: $iso<br />";
echo "Date & Time: $date<br />";

var_dump($exif);
This code produces the following:-

File Name: brass jaw.jpg
Height: 640
Width: 360
Camera: Canon EOS 550D
Shutter Speed: 244/1000000
F number: 8000000/1000000
ISO: Array
Date & Time: 2011:09:17 13:52:30

Which serves quite well apart from the ISO, which comes back as "Array". Now when I do a var_dump I see that ISOSpeedRatings returns as this:-

'ISOSpeedRatings' =>
array
0 => int 800
1 => int 800

What I can't work out is how to access the information from this - I know that the solution will probably be very simple, and that I will end up kicking myself, but I could use a little help.

hello everyone, please anyone can help me how to read data of excel file in php

Hello again. I'm trying to load data from a Facebook Share Data XML file and then displaying them in a WordPress plugin. Here's my code so far:


// Fetch Share Count Data

function fb_button () {
$fbshareUrl = urlencode(get_permalink($post->ID));
$fbshareTitle = urlencode($post->post_title);
$fbLinkStats = simplexml_load_file('http://api.facebook.com/restserver.php?method=links.getStats&urls='.$shareUrl);

 $fb_params =
        '?u=' . $fbshareUrl .
        '&amp;t=' . $fbshareTitle .
        ''
        ;

// Vertical Facebook Button

       $fb_share = '
<div class="fsbsharer" id="fb">
<a href="http://www.facebook.com/sharer.php' . $fb_params . '"  class="facebookShare">

<span class="fb_share_size_Small fb_share_count_wrapper">
<span></span>

<span class="fb_share_count_nub_top "></span> 
<span class="fb_share_count  fb_share_count_top">


<div class="fb_share_count_inner">
'. $fbLinkStats->link_stat->total_count .'
</div>

</div>
<span style="cursor:pointer;" class="FBConnectButton FBConnectButton_Small"><span class="FBConnectButton_Text">Share</span></span>
</a>
</div>
';


       echo $fb_share;
    }


This code works for everything except the title and the share count. I can fix the title myself but the share count isn't working.

When I use this in plain HTML:
<?php echo $fbLinkStats->link_stat->total_count.''; ?>
it works fine, but when I combine it all into another function to echo, it no longer works properly.

Thanks.

Hello All,

Please excuse my lack of knowledge in advance, I'm a beginner but pick things up relatively quickly, and tend to do things by trial and error.

I would appreciate any help that anyone could offer with the following:

I would like to retrieve two pieces of data from a "text file" and use them to calculate a result from a function I have in javascript. An example of the javascript code is:

<script type="text/javascript">
function calculate() {
var drybulb = document.calc_form.drybulb.value;
var relhum = document.calc_form.relhum.value;
var answer = '';
if (drybulb !== '' && relhum !== '') {
answer = (0.567*drybulb*1) + (0.393 * (relhum*1/100 * 6.105 * Math.exp(17.27 * drybulb / (237.7 + drybulb*1)))) + 3.94;
}
document.calc_form.answer.value = answer;
return false;
}
</script>

Currently this is evaluated with entry from a simple html form, but I would like to have this performed "automatically".


The "text file" that I would like to access is here, not on my server:

http://www.bom.gov.au/fwo/IDV60901/IDV60901.94870.axf

I would like to extract the "air_temp" and "rel_hum" values under the [data] section for use in my function. I just need the "most recent" values (i.e. first), not all those contained in the file. This is a single record from that section (sorry for the mess this no doubt makes):

[data]
sort_order,wmo,name[80],history_product[80],local_date_time[80],local_date_time_full[80],aifstime_utc[80],air_temp,apparent_t,cloud[80],cloud_base_m,cloud_oktas,cloud_type[80],cloud_type_id,delta_t,dewpt,gust_kmh,gust_kt,lat,lon,press,press_msl,press_qnh,press_tend[80],rain_trace[80],rel_hum,sea_state[80],swell_dir_worded[80],swell_height,swell_period,vis_km[80],weather[80],wind_dir[80],wind_spd_kmh,wind_spd_kt
0,94870,"Moorabbin Airport","IDV60901","27/10:00pm","20120227220000","20120227110000",18.8,19.3,"Partly cloudy",510,3,"-",-9999,0.8,17.5,13,7,-38.0,145.1,1013.5,-9999.0,1013.5,"-","11.4",92,"-","-",-9999.0,-9999,"10","-","S",11,6



Would it be possible to obtain these values using PHP?, and if so any advice on how this could be done (noting my minimal knowledge) would be greatly appreciated.

Cheers.

trying to create a simpleprogram that will read a text file and output information and calculations using the data in the text file. I have 4 radio buttons which represent an item Number. when one is selected the output form should print to a table the ID,Part,Count, Price, and the inventory Value= ($count * $price), can anyone tell me what i am doing wrong?
This is what the .txt file looks like:

AC1000:Hammers:122:12.50
AC1001:Wrenches:5:5.00
AC1002:Handsaws:10:10.00
AC1003:Screwdrivers:222:3.00

Here's what i have so far:
Code: [Select]
<?php
$inf = 'infile.txt';
$FILEH = fopen($inf, 'r') or die ("Cannot open $inf");
$inline = fgets($FILEH,4096);
$found = 0;
//$ptno = 
//if (isset($_POST['AC1000']) || isset($_POST['AC1000']) || isset($_POST['AC1000']) || isset($_POST['AC1000'])) {
while (!feof($FILEH) && !($found)){
list($ptno,$ptname,$num,$price) = split (':', $inline);
if ($ptno == $id) {
print '<table border=1>';
print '<th> ID <th> Part <th> Count <th> Price';
print "<tr><td> $ptno </td><td>$ptname</td>";
print "<td> $num </td><td> \$price</td><tr>";
print '</table>';
$found = 1;
}
$inline = fgets($FILEH,4096);
}
if ($found !=1) {
print "Error: PartNo=$id not found";
}
fclose ($FILEH);
?>

Well, im a n00b for php, and what i need is a php script which will read data from .xml file and write it into .txt file. Can someone help me?
Example of .xml file :

<?xml version="1.0" encoding="utf-8"?>
<tv generator-info-name="NeTXMLTV/1.0.0.0" source-info-url="http://www.net-tv.hr/" source-info-name="NeT TV XMLTV" source-data-url="http://www.net-tv.hr/xmltv/net-pregled-programa-xmltv.xml">
  <programme channel="NeT TV" start="20110413063000 +0200" stop="20110413080000 +0200">
    <title lang="hr">JUTARNJI EXPRESS</title>
    <category lang="hr">glazbeno-informativni program</category>
    <desc lang="hr">Glazbeno informativna emisija sa servisnim informacijama i jutarnjim temperaturama, idealna za jutarnje buđenje uz toplu kavu ili čaj....</desc>
  </programme>
</tv>

I need the .txt file to look like this:
201104130630 - 201104130800
JUTARNJI EXPRESS
glazbeno-informativni program
Glazbeno informativna emisija sa servisnim informacijama i jutarnjim temperaturama, idealna za jutarnje buđenje uz toplu kavu ili čaj....

Can someone please help me? thanks

Transferring data from sub-domain.site.com
Reading sub-domain.site.com

What is this all about?
I'm going to put all .. images into a separate sub-domain eg: images.site.com.
This would create a folder inside my public_HTML called "images"

Now when sites have that Transferring data, and Reading... is this .. something relating to what I want. Facebook also does it, and they get their images for the site from a sub domain, how is it all done?

I'm not sure if its entirely PHP, but I hope someone can help.

Thanks

I am just messing around, but I can't figure this out...

$hx = bin2hex('a');
echo base_convert($hx, 16, 2);
prints out 1100001
but I really want it to print: 01100001

why is the first 0 missing when my code runs?

Hi I need to convert hex or Decimal to Binary but can't find any function. Any one have one or ideas please.

hi all.

I am working on a MLM project in which i have more than 30,000 members followed by the root member,i have to store member automatically in binary tree form like

1 is root
2 is child of 1
3 is child of 1

Then 4 is child of 2
5 is child of 2

and so on ......

i have to design database for that.

please help

 :confused:can any one please guide me through this.

i want  to calculate binary income like

FOR 1 ST PAIR 1:2 OR 2:1
1ST PAIR 1:2 OR 2:1
1:1 UNLIMITED DEPTH
WEEKLY CAPPING 30 PAIR

i have created a binary tree and i am also able to display it.
but don't know how to make pairs and implement that,and provide an income.

i really need this and it is urgent,
any help will be of great value for me,
this is for my college project,
actually i am a not so good at algorithms.

thanks.

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So I have coded php for about 5-6 yrs and have never really needed to use binary conversions and the bitwise operator like >> or << .  I took a php class in college but that basically consisted of the students trying to learn php on their own...  So i have never had any exposure to that portion of php coding.  I have to take an exam on PHP with a bunch of questions that DO NOT show how good of a coder you are.  There are a bunch of questions on bitwise operators and binary conversions... Am I missing something???  Whats the point of converting a string to binary or knowing how to do this in your head?

Any help?

I am trying to display binary tree  level wise. Breadth-first tree traversal can be used in it.Can anyone point me towards its logic or point me towards a good tutorial.

Hey guys,
i am a college student and working on a project of mlm ad want to display the binary income tree,and also calculate the income that is given to each node.
Please see the attachments for the binary tree structure and database table structure.
Thanks.

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I am running Apache with the PHP module installed on Debian Linux.  My goal is to launch a binary in a background process and then feed it commands via fifo.

The binary I need to launch has a config file which lives in the home directory of the apache user (in my case the user name apache is started with is www-data). www-data's home dir was the web root so I changed it to /home/www-data.  I also change the shell from /bin/sh to /bin/bash for www-data.

Neither of these changes are present when I load a php file from a browser.

This script:

Code: [Select]
<?php
echo "User: " . exec('whoami') . "<br>";
echo "Shell: " . exec('ps -p $$ | grep sh') . "<br>";
?>
Outputs this:

Code: [Select]
User: www-data
Shell: 9179 ? 00:00:00 sh
Also if I execute the binary it does seem to read the config file which is in the www-data users directory.  I have set the home dir and the web root to be owned by www-data and it's read and writeable.

How do I get php to execute the binary so it has access to the users home directory and uses the bash shell?
Are there any other ways to launch and control a binary on a unix system via php?