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<?php $a = 8; $a = null; var_dump( isset($a)); $s = new stdClass($z=10); var_dump($s,$z);
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(false) object(stdClass)#1 (0) { } int(10)
Output for 5.0.4 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20
bool(false) Notice: Undefined variable: z in /in/YbVWs on line 7 object(stdClass)#1 (0) { } NULL
Output for 5.0.0 - 5.0.3
bool(false) Notice: Undefined variable: z in /in/YbVWs on line 7 object(stdClass)#1 (0) { } NULL
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
bool(false) Notice: Undefined variable: z in /in/YbVWs on line 7 object(stdClass)(0) { } NULL

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