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<?php function square($i): int { return $i*$i; } $i = 2; while (true) { echo $i . PHP_EOL; $i = square($i); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
2 4 16 256 65536 4294967296 Fatal error: Uncaught TypeError: square(): Return value must be of type int, float returned in /in/foqum:4 Stack trace: #0 /in/foqum(10): square(4294967296) #1 {main} thrown in /in/foqum on line 4
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 2 4 16 256 65536 4294967296 Fatal error: Uncaught TypeError: square(): Return value must be of type int, float returned in /in/foqum:4 Stack trace: #0 /in/foqum(10): square(4294967296) #1 {main} thrown in /in/foqum on line 4
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
2 4 16 256 65536 4294967296 Fatal error: Uncaught TypeError: Return value of square() must be of the type int, float returned in /in/foqum:4 Stack trace: #0 /in/foqum(10): square(4294967296) #1 {main} thrown in /in/foqum on line 4
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
2 4 16 256 65536 4294967296 Fatal error: Uncaught TypeError: Return value of square() must be of the type integer, float returned in /in/foqum:4 Stack trace: #0 /in/foqum(10): square(4294967296) #1 {main} thrown in /in/foqum on line 4
Process exited with code 255.

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