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<?php class Test { public $res; public function __construct() { $this->res = fopen('/tmp/a','w'); } } var_dump( $test = new Test(), $a = serialize($test), unserialize($a) );
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.25, 8.4.1 - 8.4.12
object(Test)#1 (1) { ["res"]=> resource(5) of type (stream) } string(29) "O:4:"Test":1:{s:3:"res";i:0;}" object(Test)#2 (1) { ["res"]=> int(0) }
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(Test)#1 (1) { ["res"]=> resource(5) of type (stream) } string(29) "O:4:"Test":1:{s:3:"res";i:0;}" object(Test)#2 (1) { ["res"]=> int(0) }

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