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<?php $foo = [10, 20, 30]; var_dump($foo[]++); var_dump(++$foo[]); var_dump(++$foo[]); var_dump($foo); var_dump(--$foo[]); var_dump($foo);
Output for 8.3.0 - 8.3.4, 8.3.6
NULL int(1) int(1) array(6) { [0]=> int(10) [1]=> int(20) [2]=> int(30) [3]=> int(1) [4]=> int(1) [5]=> int(1) } Warning: Decrement on type null has no effect, this will change in the next major version of PHP in /in/iWYfl on line 8 NULL array(7) { [0]=> int(10) [1]=> int(20) [2]=> int(30) [3]=> int(1) [4]=> int(1) [5]=> int(1) [6]=> NULL }
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 NULL int(1) int(1) array(6) { [0]=> int(10) [1]=> int(20) [2]=> int(30) [3]=> int(1) [4]=> int(1) [5]=> int(1) } Warning: Decrement on type null has no effect, this will change in the next major version of PHP in /in/iWYfl on line 8 NULL array(7) { [0]=> int(10) [1]=> int(20) [2]=> int(30) [3]=> int(1) [4]=> int(1) [5]=> int(1) [6]=> NULL }
Output for 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
NULL int(1) int(1) array(6) { [0]=> int(10) [1]=> int(20) [2]=> int(30) [3]=> int(1) [4]=> int(1) [5]=> int(1) } NULL array(7) { [0]=> int(10) [1]=> int(20) [2]=> int(30) [3]=> int(1) [4]=> int(1) [5]=> int(1) [6]=> NULL }

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189.5 ms | 403 KiB | 181 Q