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<?php $obj = new stdClass; $obj->{'123'} = '456'; print_r($obj); echo $obj->{'123'},"\n"; echo $obj->{123},"\n"; $obj->a->{'123'} = $obj->{'123'}; print_r($obj); echo $obj->a->{'123'},"\n";
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
stdClass Object ( [123] => 456 ) 456 456 Fatal error: Uncaught Error: Attempt to assign property "123" on null in /in/OVcKT:7 Stack trace: #0 {main} thrown in /in/OVcKT on line 7
Process exited with code 255.
Output for 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 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
stdClass Object ( [123] => 456 ) 456 456 Warning: Creating default object from empty value in /in/OVcKT on line 7 stdClass Object ( [123] => 456 [a] => stdClass Object ( [123] => 456 ) ) 456
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
stdClass Object ( [123] => 456 ) 456 456 Strict Standards: Creating default object from empty value in /in/OVcKT on line 7 stdClass Object ( [123] => 456 [a] => stdClass Object ( [123] => 456 ) ) 456
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Property name must be a string in /in/OVcKT on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.2
stdClass Object ( [123] => 456 ) 456
Process exited with code 139.

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