Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
1.4k views
in Technique[技术] by (71.8m points)

php - Access static object property through variable name

I know its possible to access an object property/method using a variable as its name

ex.:

$propName = 'something';
$something = $object->$propName;

Is it possible to do the same w/ constants or static properties?

I've tried:

$constName = 'MY_CONST';

MyCLass::{$constName};

and

$obj::{$constName};

But nothing seems to work and I couldn't find it anywhere.

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Use: Class::$$constName, this is similar to normal variable variables.

Demo:

<?php    
class MyClass {
    public static $var = 'A';
}
$name = 'var';
echo MyClass::$$name; // echoes 'A'

Constants can be access with the constant function:

constant('MyClass::'.$constantName)

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...