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<?php class Foo { private $info = []; function __set($k, $v){ $this->info[$k] = $v; } function &__get($k){ $n = null; return $this->info[$k] ?: $n; } } $bar = new Foo(); $bar->foo = []; var_dump($bar->foo); $bar->foo[] = 'fool'; var_dump($bar->foo);
Output for 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.31, 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
Notice: Only variable references should be returned by reference in /in/t36bd on line 11 NULL Notice: Only variable references should be returned by reference in /in/t36bd on line 11 Notice: Only variable references should be returned by reference in /in/t36bd on line 11 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 Notice: Only variable references should be returned by reference in /in/t36bd on line 11 NULL Notice: Only variable references should be returned by reference in /in/t36bd on line 11 Notice: Only variable references should be returned by reference in /in/t36bd on line 11 NULL
Output for 7.3.32 - 7.3.33
NULL NULL
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
Notice: Only variable references should be returned by reference in /in/t36bd on line 11 NULL Notice: Only variable references should be returned by reference in /in/t36bd on line 11 Notice: Indirect modification of overloaded property Foo::$foo has no effect in /in/t36bd on line 18 Notice: Only variable references should be returned by reference in /in/t36bd on line 11 NULL
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/t36bd on line 5
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/t36bd on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/t36bd on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/t36bd on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/t36bd on line 5
Process exited with code 255.
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