GMEETSOFT

<?php

$ip=$_SERVER['REMOTE_ADDR'];

echo “<font face=’Verdana’ size=’3′><b>IP Address= $ip</b>”;

$url = “http://www.ipmango.com/api.php?ip=”.$ip; $xml = simplexml_load_file($url);

echo “City : {$xml->city} <br />”;

echo “Region : {$xml->region} <br />”;

echo “Country Name : {$xml->countryname} <br />”;

echo “Latitude : {$xml->latitude} <br />”;

echo “Longitude : {$xml->longitude} <br />”;

?>

Refer: http://www.shefeekj.com/get-ip-and-location-using-php.html

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Difference Between PHP4 & PHP 5

1. Soap, MySQLi and Sqlite extension introduced in php5

2. Exception handling has been introduced in PHP5 (i.e. try and catch statements)

3. Objects can iterate through foreach in PHP5

$object = new IteratorTest();

foreach ($object as $value) {

print $value;

}

4. Added public/private/protected access modifiers in PHP5

5. Introduced Unified constructor name __construct() in PHP5

6. Object destructor support by defining a __destructor() method in PHP5

7. Introduced abstract classes & methods

Good article to go through:

http://devzone.zend.com/article/1714

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Difference between MyISAM and InnoDB

1. Transactions: InnoDB support transactions means You can commit and rollback with InnoDB but with MyISAM once you issue a command it’s done. But MYISAM does not support any database transactions means if the transactions related to large amount of data transfer it will not provide because memory is less.

2. Locking: INNODB provide the row level locking means if you are performing an insert into InnoDB table only that row will be locked not the entire table. While MYISAM provide the table level locking means if the data in one row has been modified, the entire table will lock for the next process.

3. Foreign keys – InnoDB support FK constraint but MYISAM tables do not support.

4. Data Types: MYISAM provide a full variety of datatypes, but INNODB will not.

5. Full Text Search: InnoDB does not support Full Text search but MyIsam provide full text search.

6. Memory Space: MYISAM occupies less memory sapce for tables rather than InnoDB tables.

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