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<?php $obj = new stdClass; $obj->{123} = '456'; print_r($obj); echo $obj->{123},"\n"; if (isset($obj->{123})) { echo 'Property 123 is set',"\n";} if (property_exists($obj,123)) echo 'Property 123 exists',"\n"; echo $obj->{123};
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
stdClass Object ( [123] => 456 ) 456 Property 123 is set Property 123 exists 456
Output for 5.0.0 - 5.0.5
stdClass Object ( [123] => 456 ) 456 Property 123 is set Fatal error: Call to undefined function property_exists() in /in/mBJdV on line 7
Process exited with code 255.
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Property name must be a string in /in/mBJdV on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.2

Process exited with code 139.
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257.48 ms | 401 KiB | 355 Q