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<?php function setByLink( &$tree, &$dst ) { $dst = &$tree[0]; $tree[] = 'Hi'; } $tree = [ [ 1, 2 ], 3 ]; setByLink( $tree, $arr ); $arr[] = 'Hello'; var_dump( $tree );
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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, 8.3.0 - 8.3.4, 8.3.6
array(3) { [0]=> array(2) { [0]=> int(1) [1]=> int(2) } [1]=> int(3) [2]=> string(2) "Hi" }
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]=> array(2) { [0]=> int(1) [1]=> int(2) } [1]=> int(3) [2]=> string(2) "Hi" }

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147.59 ms | 402 KiB | 198 Q