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<?php $a = new GMP(1); $b =& $a; var_dump($a, $b); $a += 1; var_dump($a, $b);
Output for 8.2.4 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
object(GMP)#1 (1) { ["num"]=> string(1) "1" } object(GMP)#1 (1) { ["num"]=> string(1) "1" } object(GMP)#2 (1) { ["num"]=> string(1) "2" } object(GMP)#2 (1) { ["num"]=> string(1) "2" }
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 object(GMP)#1 (1) { ["num"]=> string(1) "1" } object(GMP)#1 (1) { ["num"]=> string(1) "1" } object(GMP)#2 (1) { ["num"]=> string(1) "2" } object(GMP)#2 (1) { ["num"]=> string(1) "2" }
Output for 5.6.8 - 5.6.20, 5.6.28, 7.0.0 - 7.0.5, 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 7.4.32, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.3
object(GMP)#1 (1) { ["num"]=> string(1) "0" } object(GMP)#1 (1) { ["num"]=> string(1) "0" } object(GMP)#2 (1) { ["num"]=> string(1) "1" } object(GMP)#2 (1) { ["num"]=> string(1) "1" }
Output for 8.0.13
Fatal error: Uncaught Error: Class "GMP" not found in /in/mHsLG:3 Stack trace: #0 {main} thrown in /in/mHsLG on line 3
Process exited with code 255.
Output for 7.0.6, 7.3.32 - 7.3.33, 7.4.33
Fatal error: Uncaught Error: Class 'GMP' not found in /in/mHsLG:3 Stack trace: #0 {main} thrown in /in/mHsLG on line 3
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.21
Fatal error: Class 'GMP' not found in /in/mHsLG on line 3
Process exited with code 255.

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