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@ 2022-11-11T00:42:19Z

<?php

class Foo {
    const BAR = 'this is bar';
}

var_dump(Foo::BAR);

$str = 'BAR';

var_dump(constant(Foo::class. '::' . $str));

// var_dump(Foo::{$str}); -> これはできない

Output
Performance
VLD
References
Branches

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

preferences:dark modelive preview

46.73 ms | 402 KiB | 5 Q