How to get parameters in class function with php class

Question

In my project, I had defined a Datasource class in php.

I want to call function with class, so I had define static getRedis function in Datasource class.

Here is Datasource.php code:

<?php

 namespace common;

 class Datasource {

 public $config_name;  

 public $server_region;  


public function __construct() {}

public static function getRedis($config_name = NULL, $server_region = 'default') {
    $this->config_name=$config_name;
    $this->server_region=$server_region
    return $this->config_name;
}
}

Now I want to call getRedis function and display instance1 in my html page;

Here is html code:

<?php 
include "o1ws1v/class/common/Datasource.php";

$redis_obj = common\Datasource::getRedis('instance1');
echo $redis_obj;
?>

But it words fail. I can not get $redis_obj. it shows nothing.

Who can help me?

You're missing a semicolon in your function. As Barmar wrote, you have to use self:: instead of $this — César Escudero
– César Escudero, Commented Jun 12, 2018 at 2:06

M. Kebza · Accepted Answer · 2018-06-12 02:05:56Z

1

Problem is you are using $this context in static method. If you made your class variables static it will work.

More info Static keyword

Your code:

<?php

 namespace common;

 class Datasource {

    public static $config_name;  

    public static $server_region;  

    public static function getRedis($config_name = NULL, $server_region = 'default') {
        self::$config_name=$config_name;
        return self::$config_name;
    }
}

answered Jun 12, 2018 at 2:05

M. Kebza

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Comments

tim · Accepted Answer · 2018-06-12 02:37:02Z

0

If you are just trying to call a function from your class, it does not have to be static. Make you function in your class public and it does not need to be in a constructor.

This is in your class.

public function getRedis($config_name = NULL, $server_region = 'default') {
    $this->config_name=$config_name;
    $this->server_region=$server_region;
    return $this->config_name;
}

In the file that you want to call you function.

$variable = new Datasource; 
$variable->getRedis(); //This will call your function

edited Jun 12, 2018 at 2:37

answered Jun 12, 2018 at 2:29

tim

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