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run code in 150+ php & hhvm versions
Bugs & Features
<?php $obj = (object)array( ('123a' + 0) => '456'); var_dump($obj);
based on TF8u2
Output for 7.1.0
Notice: A non well formed numeric value encountered in /in/oCFUS on line 2 object(stdClass)#1 (1) { [123]=> string(3) "456" }
Output for 5.0.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.0.14
object(stdClass)#1 (1) { [123]=> string(3) "456" }
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.3.0 - 4.4.9
object(stdClass)(1) { [123]=> string(3) "456" }