3v4l.org

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<?php class a{ public function __toString() { $debug = debug_backtrace(); echo "__toString called on line ".$debug['0']['line']."\n"; return ""; } } function string_param(string $a){ } function object_param(object $a){ echo $a; //here (string)$a; //here $a == "0"; //here string_param($a); //here ?><?= $a; ?><?php //here } $a = new a(); $a == "0"; //here string_param($a); //here object_param($a);
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
__toString called on line 24 __toString called on line 11 __toString called on line 16 __toString called on line 17 __toString called on line 18 __toString called on line 11 __toString called on line 20
Output for 7.1.25 - 7.1.33
__toString called on line 24 __toString called on line 11 Fatal error: Uncaught TypeError: Argument 1 passed to object_param() must be an instance of object, instance of a given, called in /in/F4qIL on line 26 and defined in /in/F4qIL:15 Stack trace: #0 /in/F4qIL(26): object_param(Object(a)) #1 {main} thrown in /in/F4qIL on line 15
Process exited with code 255.
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