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<?php class obj { var $prop; function __wakeup() { $this->prop = 'awake'; } } $x = 'a:4:{i:0;O:8:"stdClass":1:{i:0;a:1:{i:0;i:1;}}i:1;O:3:"obj":1:{s:4:"prop";R:2;}i:2;R:3;i:3;R:3;}'; $y = unserialize($x); var_dump($y); unset($y[3]); var_dump($y);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
array(4) { [0]=> &string(5) "awake" [1]=> object(obj)#2 (1) { ["prop"]=> &string(5) "awake" } [2]=> &array(1) { [0]=> int(1) } [3]=> &array(1) { [0]=> int(1) } } array(3) { [0]=> &string(5) "awake" [1]=> object(obj)#2 (1) { ["prop"]=> &string(5) "awake" } [2]=> array(1) { [0]=> int(1) } }

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188.95 ms | 404 KiB | 179 Q