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<?php $one=['A','B','C']; $two=['D','E']; var_dump($one+$two); echo '---------------------'; var_dump($two+$one); echo '---------------------'; var_dump(array_merge($one,$two)); echo '---------------------'; var_dump(array_merge($two,$one));
Output for 7.2.0 - 7.2.34, 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 - 8.3.4, 8.3.6
array(3) { [0]=> string(1) "A" [1]=> string(1) "B" [2]=> string(1) "C" } ---------------------array(3) { [0]=> string(1) "D" [1]=> string(1) "E" [2]=> string(1) "C" } ---------------------array(5) { [0]=> string(1) "A" [1]=> string(1) "B" [2]=> string(1) "C" [3]=> string(1) "D" [4]=> string(1) "E" } ---------------------array(5) { [0]=> string(1) "D" [1]=> string(1) "E" [2]=> string(1) "A" [3]=> string(1) "B" [4]=> string(1) "C" }
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 array(3) { [0]=> string(1) "A" [1]=> string(1) "B" [2]=> string(1) "C" } ---------------------array(3) { [0]=> string(1) "D" [1]=> string(1) "E" [2]=> string(1) "C" } ---------------------array(5) { [0]=> string(1) "A" [1]=> string(1) "B" [2]=> string(1) "C" [3]=> string(1) "D" [4]=> string(1) "E" } ---------------------array(5) { [0]=> string(1) "D" [1]=> string(1) "E" [2]=> string(1) "A" [3]=> string(1) "B" [4]=> string(1) "C" }

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145.6 ms | 403 KiB | 182 Q