Online PHP editor | output for Drfk6

@ 2020-05-10T13:39:43Z

<?php

$TZ= timezone_open( "UTC" );
$refdate=date_create_from_format ( "z Y" ,"31 2020" ,$TZ );
echo date_format($refdate,"d/m/Y"), PHP_EOL;

$refdate=date_create_from_format ( "z Y" ,"60 2020" ,$TZ );
echo date_format($refdate,"d/m/Y"), PHP_EOL;

$refdate=date_create_from_format ( "z Y" ,"91 2020" ,$TZ );
echo date_format($refdate,"d/m/Y"), PHP_EOL;

$refdate=date_create_from_format ( "z Y" ,"121 2020" ,$TZ );
echo date_format($refdate,"d/m/Y"), PHP_EOL;

$refdate=date_create_from_format ( "z Y" ,"130 2020" ,$TZ );
echo date_format($refdate,"d/m/Y"), PHP_EOL;

Output for 8.3.0 - 8.3.25, 8.4.1 - 8.4.12: Fatal error: Uncaught TypeError: date_format(): Argument #1 ($object) must be of type DateTimeInterface, false given in /in/Drfk6:5 Stack trace: #0 /in/Drfk6(5): date_format(false, 'd/m/Y') #1 {main} thrown in /in/Drfk6 on line 5
Process exited with code 255.
Output for 8.0.10 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29: Fatal error: Uncaught TypeError: date_format(): Argument #1 ($object) must be of type DateTimeInterface, bool given in /in/Drfk6:5 Stack trace: #0 /in/Drfk6(5): date_format(false, 'd/m/Y') #1 {main} thrown in /in/Drfk6 on line 5
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.9: 01/02/2020 02/03/2020 02/04/2020 02/05/2020 11/05/2020

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