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<?php $test = [0=> 'zero', cheese=>'three', 2=>'two']; print_r($test); $test = array_merge($test); print_r($test);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Fatal error: Uncaught Error: Undefined constant "cheese" in /in/mvB7D:3 Stack trace: #0 {main} thrown in /in/mvB7D on line 3
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught Error: Undefined constant "cheese" in /in/mvB7D:3 Stack trace: #0 {main} thrown in /in/mvB7D on line 3
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 cheese - assumed 'cheese' (this will throw an Error in a future version of PHP) in /in/mvB7D on line 3 Array ( [0] => zero [cheese] => three [2] => two ) Array ( [0] => zero [cheese] => three [1] => two )
Output for 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25
Notice: Use of undefined constant cheese - assumed 'cheese' in /in/mvB7D on line 3 Array ( [0] => zero [cheese] => three [2] => two ) Array ( [0] => zero [cheese] => three [1] => two )

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