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Let's talk about php execute class method
- PHPzOriginal
- 2023-03-29 10:09:511012browse
PHP is a popular programming language with a wide range of applications. During the development of a web application, you need to write a class that performs a specific task. This article will introduce the Execute class and its methods in PHP.
The Execute class is an abstract class that provides a framework that enables you to perform specific operations in your web application. You can inherit the Execute class and implement its available functions.
The Execute class has the following four methods:
- execute()
- set_command()
- get_result()
- clear_result()
Now, we will briefly discuss the role and usage of these methods.
- Execute
The execute() method is the method you need to implement in your subclass. This method will perform the task to be performed and store the results in the internal structure of the Execute object.
You can use any function in PHP to perform tasks in the execute() method. For example, you can connect to a database, query the data and disconnect when execution ends.
Here is an example:
abstract class Execute {
protected $result;
abstract public function execute();
public function get_result() {
return $this->result;
}
public function clear_result() {
unset($this->result);
}
protected function set_result($value) {
$this->result = $value;
}
protected function set_command($cmd) {
// execute command and save result
$this->set_result($result);
}
}
- Set command
In the set_command() method, you need to write the command you want to use in the execute() method command to execute. You can execute any command here, such as connecting to a database or reading a file.
The following is an example:
class MyExecute extends Execute {
public function execute() {
$cmd = "SELECT * FROM `mytable`";
$this->set_command($cmd);
}
}
In this example, we wrote a subclass MyExecute for executing SQL queries. In the execute() method, we set the command to be executed and pass it to the set_command() method in the Execute class.
- Get the result
Use the get_result() method to get the result of the last executed task.
For example:
class MyExecute extends Execute {
public function execute() {
$cmd = "SELECT * FROM `mytable`";
$this->set_command($cmd);
}
public function my_method() {
$result = $this->get_result();
// process result here
}
}
In this example, we wrote a my_method() method to handle the results of the last executed task. In this method we get the result stored in Execute class and process it.
- Clear the results
Use the clear_result() method to clear the results of the executed task.
For example:
class MyExecute extends Execute {
public function execute() {
$cmd = "SELECT * FROM `mytable`";
$this->set_command($cmd);
}
public function my_method() {
$this->clear_result();
// clear results here
}
}
In this example, we wrote a my_method() method to clear the results of the executed task. In this method, we use the clear_result() method to delete the results stored in the Execute class.
Summary
The Execute class and its methods provide you with a framework for performing specific tasks. You can inherit the Execute class and implement its available methods. This makes writing web applications much easier and more efficient. Hope this article is helpful to PHP developers.
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