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As an open source programming language, PHP has been widely used in website development and application development. PHP also has many advantages and features when it comes to data management and data warehouse development. This article will introduce some key technologies and methods of data management and data warehouse development in PHP to help you better apply PHP for data processing.
1. Database operation
The database is an important part of current data management and data warehouse development. The database module that comes with PHP is powerful and can support various types of databases such as MySQL, PostgreSQL, Oracle, and MSSQL. Commonly used database operations are introduced below:
mysqli_connect("Server Address","User name","password","database name");
Sample code:
$sql_conn=mysqli_connect("localhost","root","","test") or die ("Database connection failed!");
mysqli_query(connection name, SQL statement);
Sample code:
$sql="SELECT * FROM user";
$result=mysqli_query($sql_conn,$sql);
mysqli_fetch_array(result set);
This function supports two parameters , the first parameter is the result set, and the second parameter specifies the returned data type, with three optional values: MYSQLI_ASSOC, MYSQLI_NUM, and MYSQLI_BOTH. MYSQLI_ASSOC means returning an associative array, MYSQLI_NUM means returning a numeric index array, and MYSQLI_BOTH means returning both an associative array and a numeric index array.
Sample code:
while($user=mysqli_fetch_array($result,MYSQLI_ASSOC))
{
echo "username:".$user['username']." email:".$user['email'];
}
2. Data warehouse Development
A data warehouse is a collection of data designed to support data analysis applications. Compared with traditional data management methods, data warehouses have stronger data storage and processing capabilities and can support more complex data analysis tasks. In PHP, data warehouses also have some commonly used technologies:
Sample code:
function clean_title($title)
{
// 剔除HTML标签 $title=preg_replace("/<[^<]*>/i","",$title); // 剔除特殊字符 $title=str_replace(array("
","","
"," "), '',$title);
return $title;
}
Sample code:
// Connect to Redis
$redis=new Redis();
$redis->connect('127.0.0.1',6379);
// Publish data
$redis->publish('news','There is a piece of news you can read!') ;
Sample code:
// Calculate the average
$array=array(4,5,6,7,8,9);
$avg=array_sum($array)/count($array);
echo "Average The value is: ".$avg;
Summary
PHP is a powerful programming language that has unique advantages for data management and data warehouse development. This article introduces database operations and data in PHP Warehouse development technology, I hope it can help readers in data processing.
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