PHP magic methods __GET, __SET usage examples, __get__set_PHP tutorial

PHP magic methods __GET, __SET usage examples, __get__set

__get()　 - __get() will be called when reading the value of an inaccessible property.

__set()　 - __set() will be called when assigning a value to an inaccessible property.

Copy code The code is as follows:

/**
* Clear understanding of __get() __set()
​*/
class Example {
 
//Public attributes
Public $public = 'pub' ;
//Protected - this attribute is available in subclasses
protected $protected = 'pro';
//Private - this attribute can only be used by this class
private $private = 'pri';
 
//Automatically load the __get() method when the attribute in the access object does not exist or is not a public attribute
Public function __get($name){
            return 'Call __get() method:'.$name;
}
 
//When assigning a value to an attribute of an object, if the attribute does not exist or is a non-public attribute, the __set() method is automatically loaded
Public function __set($name,$value){
echo "nname：".$name.',value:'.$value."n";
}
}

$example = new Example;
echo '

';

echo $example->public."n";

echo $example->protected."n";

echo $example->private."n";

echo $example->other."n";

echo '
';

$example->public = 'lic'; //This assignment is successful and nothing is displayed 

$example->protected = 'tec';

$example->private = 'vat';

$example->other = 'er';

echo '
';

echo 'Print public attributes:'.$example->public;

The results are as follows:

Copy code The code is as follows:

pub
Call the __get() method: protected
Call the __get() method: private
Call the __get() method: other

name: protected, value: tec

name: private, value: vat

name:other,value:er

Print public attribute: lic

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