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@ 2014-10-20T21:02:55Z

<?php
class foo {
    const BAR = 1;
}
var_dump(defined("Foo::BAR"), defined("Foo::BAZ"));

Output
Performance
VLD
References
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var_dump: documentation ( source)
defined: documentation ( source)

preferences:dark modelive preview

53.19 ms | 402 KiB | 5 Q