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@ 2015-09-16T20:35:30Z

<?php

namespace Foo\Space {
    class Foo
    {
        
        const SOME_CONSTANT = 'Works!';
        
    }
}

namespace Other\Space {
    $class = \Foo\Space\Foo::class;
    $constant = 'SOME_CONSTANT';
    
    // Valid
    var_dump(constant("{$class}::{$constant}"));
    
    // Invalid
    var_dump(($class)::$constant);
}

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
constant: documentation ( source)

preferences:dark modelive preview

52.32 ms | 402 KiB | 5 Q