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<?php $f = function(int $i) { }; $info = new ReflectionFunction($f); var_dump($info->getParameters());
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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(1) { [0]=> object(ReflectionParameter)#3 (1) { ["name"]=> string(1) "i" } }
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(1) { [0]=> object(ReflectionParameter)#3 (1) { ["name"]=> string(1) "i" } }
Output for 5.6.0 - 5.6.40
array(1) { [0]=> &object(ReflectionParameter)#3 (1) { ["name"]=> string(1) "i" } }

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