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run code in 300+ PHP versions simultaneously
<?php parse_str(new stdClass(), $foo); var_dump($foo);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: parse_str(): Argument #1 ($string) must be of type string, stdClass given in /in/bgFqd:2 Stack trace: #0 /in/bgFqd(2): parse_str(Object(stdClass), NULL) #1 {main} thrown in /in/bgFqd on line 2
Process exited with code 255.
Output for 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, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: parse_str() expects parameter 1 to be string, object given in /in/bgFqd on line 2 NULL
Output for 5.2.0 - 5.2.17
Catchable fatal error: Object of class stdClass could not be converted to string in /in/bgFqd on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Notice: Object of class stdClass to string conversion in /in/bgFqd on line 2 array(1) { ["Object"]=> string(0) "" }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Notice: Object to string conversion in /in/bgFqd on line 2 array(1) { ["Object"]=> string(0) "" }

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