3v4l.org

run code in 300+ PHP versions simultaneously
<?php function foo(): ?object { return new stdClass(); } function bar(): ?object { return null; } foo(); bar();
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.25, 8.3.0 - 8.3.14
Output for 7.1.0 - 7.1.33
Fatal error: Uncaught TypeError: Return value of foo() must be an instance of object or null, instance of stdClass returned in /in/V6HDj:5 Stack trace: #0 /in/V6HDj(13): foo() #1 {main} thrown in /in/V6HDj on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.33
Parse error: syntax error, unexpected '?' in /in/V6HDj on line 3
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting '{' in /in/V6HDj on line 3
Process exited with code 255.
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