@ 2014-05-28T15:42:16Z <?php
class A
{
}
class B extends A
{
}
$x = 'B';
var_dump( is_subclass_of( $x, A ) );
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Output for 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 Fatal error: Uncaught Error: Undefined constant "A" in /in/0JdnM:12
Stack trace:
#0 {main}
thrown in /in/0JdnM on line 12
Process exited with code 255 . Output for 7.2.0 - 7.2.33 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 Warning: Use of undefined constant A - assumed 'A' (this will throw an Error in a future version of PHP) in /in/0JdnM on line 12
bool(true)
Output for 5.0.3 - 5.0.5 , 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.29 , 5.4.0 - 5.4.45 , 5.5.0 - 5.5.38 , 5.6.0 - 5.6.28 , 7.0.0 - 7.0.20 , 7.1.0 - 7.1.33 Notice: Use of undefined constant A - assumed 'A' in /in/0JdnM on line 12
bool(true)
Output for 4.3.0 - 4.3.11 , 4.4.0 - 4.4.9 , 5.0.0 - 5.0.2 Notice: Use of undefined constant A - assumed 'A' in /in/0JdnM on line 12
bool(false)
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287.26 ms | 402 KiB | 384 Q