ESHAN

Check If A Value Exists In Multidimensional Array

2010-05-02T00:54:00.003+06:00

Here is a function which will help you to know if a value exists in Multidimensional Array.

function in_mdarray($needle,$array)
{
if (array_key_exists($needle,$array) or in_array($needle,$array))
{
return true;
}
else
{
$return = false;
foreach (array_values($array) as $value)
{
if (is_array($value) and !$return)
{
$return = in_mdarray($needle,$value);
}
}
return $return;
}
}

Check If A Value Exists In Associative Array

2010-05-01T21:42:00.001+06:00

The "in_array" function of php checks if a value exists in an array. But it don't work properly with associative array. Here is a function which will work properly with associative array.

function in_assoc($needle,$array)
{
$key = array_keys($array);
$value = array_values($array);
if (in_array($needle,$key)){return true;}
elseif (in_array($needle,$value)){return true;}
else {return false;}
}

Grab All Links Of Web Page Using Python

2010-03-23T01:15:00.000+06:00

I always try to make useful program to learn a Programming Language. Now I am trying to learn Python. I will try to post my practice code here. Today I will show you how to grab all links of web page using Python's "BeautifulSoup" module.

import urllib,BeautifulSoup
def get_links(url):
page = urllib.urlopen(url)
soup = BeautifulSoup.BeautifulSoup(page.read())
aTag = soup.findAll("a")
link = []
for a in aTag:
if a.has_key("href"):
link.append(a['href'])
return link
print get_links("http://localhost/PRACTIECE/a2/")

Enjoy!!!

Replace Links With Html

2010-02-23T15:53:00.002+06:00

You can replace links with html tag using PHP regular expression.
Here is an example of it.

function replace_link_with_link($string)
{
$pattern = "|http://(\w+)([A-Z0-9-_:./?]+)*|i";
$string = preg_replace($pattern,'<a href="\0">\0</a>',$string);
return $string;
}

Enjoy. Help Helpless.

Regular Expression To Replace All Mentioned Name With Link

2010-02-23T01:18:00.003+06:00

In twitter Rana vai gave me a code to replace all mentioned name with link like twitter. Check that.
There was 2 problem.

I anyone use '.' after mentioned name then there will be '.' in link.
There will be '@' in link.

Here is a function. I hope it will work perfectly

function link_from_at($string)
{
$status = preg_replace("|@([a-zA-Z0-9]+)*|",'@<a href="\1">\1</a>',$string);
return $status;
}

Regular Expression to Find All Mentioned Names by ‘@’

2010-02-22T18:38:00.001+06:00

I have seen a cool example about it at Junal vai's blog. Here is a shortcut example of it..

function name_from_at($string)
{
$pattern = "/@([a-zA-Z0-9]+)/i";
preg_match_all($pattern,$string,$array);
return $array[0];
}

Enjoy..... Help the people of Haiti......

Make Your Own Templating Engine

2010-01-24T00:50:00.003+06:00

You can make your own templating engine easily. May be you can't add all facilities of other popular frameworks but it will help you to know something new.

Today I will show you how to write a simple templating engine..

First make a PHP Class which is the heart of our templating engine. Make a file named template.class.php . Now write the code shown below..

class eshan_templete
{
    private $array_var = array();
    private $array_item = array();

    public function __construct($assign = false,$display = false)
    {
        if ($assign){$this->assign($assign);}
        if ($display){$this->load($display);}
    }

    public function assign($var,$item = false)
    {
        if (is_array($var))
        {
            foreach ($var as $a=>$b)
            {
                $this->array_var[] = '{$'.$a.'}';
                $this->array_item[] = $b;
            }
        }
        else {$this->array_var[] = '{$'.$var.'}';$this->array_item[] = $item;}
    }

    public function display($file)
    {
        if (file_exists($file))
        {
            echo str_replace($this->array_var,$this->array_item,file_get_contents($file));
        }
        else {echo "Templete not found";}
    }
}

Add PHP tag in it.
Now make a file named index.tpl . Now write html code in it. Add a PHP variable in it after body. Like [body]{$hello}[/body]. Replace '[' with '<' and replace ']' with '>' .

Now make a file named index.php. Write the code shown below..

include_once("template.clas.php");
$templete = new eshan_templete();
$templete->assign("hello","hello world");
$templete->display("index.tpl");

Now study it. It is one of the most simple templating engine. If it help you then donate some money to help the people of Haiti.

Happy New Year

2010-01-01T01:01:00.000+06:00

Happy New Year

PHP

echo "Happy New Year";

PYTHON

print("Happy New Year")

Using System;
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Happy New Year");
}
}

JAVA

class Program
{
public static void main(String args[])
{
System.out.print("Happy New Year");
}
}

main()
{
printf("Happy New Year");
}

DOWNLOAD FILE USING PHP

2009-12-10T00:11:00.000+07:00

You can easily download file in your server using PHP.

You can use PHP's copy() function or file_get_contents() and file_put_contents() functions or curl library to download file.

Here is some example for you :

COPY FUNCTION

$file = "http://example.com/file.html";
copy($file,"eshan.html");

file_get_contents and file_fut_contents

$file = "http://example.com/file.html";
$file_data = file_get_contents($file);
file_put_contents("eshan.html",$file_data)

CURL

$ch = curl_init($file);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch,CURLOPT_USERAGENT,$_SERVER['HTTP_USER_AGENT']);
$data = curl_exec($ch);
$fp = fopen("dpt.php","w");
fwrite($fp,$data);

ENJOY !!!

FTP AND ZIP WITH PHP

2009-12-09T23:00:00.000+07:00

You can easily download a file from ftp and archive it using php.
Here is an example for you :

$host = "your ftp host";
$user = "your ftp username";
$pass = "your ftp password";
if (class_exists("ZipArchive"))
{
$ftp = ftp_connect($host);
ftp_login($ftp,$user,$pass);
$zip = new ZipArchive;
if ($zip->open("test.zip") === true)
{
ftp_get($ftp,"eshan.php","index.php",FTP_ASCII);
$zip->addFile("eshan.php","eshan.php");
$zip->close();
unlink("eshan.php");
echo "ok";
}
else {echo "ERROR";}
}
else {echo "Very sad";}
?>

First we have connected with ftp server and by using ftp_get() function we have downloaded file.

By using addFile() method of ZipArchive class we have added downloaded file.

After that we have deleted downloaded file using unlink() function.

HELLO WORLD

2009-12-08T18:18:00.000+07:00

Hi,
this is Eshan from Bangladesh. I am a new blogger and a student