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<?php function add(double $a, double $b) { return $a + $b; } echo add((double)1, (double)2); ?>
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: "double" will be interpreted as a class name. Did you mean "float"? Write "\double" to suppress this warning in /in/1W0ib on line 2 Warning: "double" will be interpreted as a class name. Did you mean "float"? Write "\double" to suppress this warning in /in/1W0ib on line 2 Fatal error: Uncaught TypeError: add(): Argument #1 ($a) must be of type double, float given, called in /in/1W0ib on line 6 and defined in /in/1W0ib:2 Stack trace: #0 /in/1W0ib(6): add(1.0, 2.0) #1 {main} thrown in /in/1W0ib on line 2
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 Warning: "double" will be interpreted as a class name. Did you mean "float"? Write "\double" to suppress this warning in /in/1W0ib on line 2 Warning: "double" will be interpreted as a class name. Did you mean "float"? Write "\double" to suppress this warning in /in/1W0ib on line 2 Fatal error: Uncaught TypeError: add(): Argument #1 ($a) must be of type double, float given, called in /in/1W0ib on line 6 and defined in /in/1W0ib:2 Stack trace: #0 /in/1W0ib(6): add(1.0, 2.0) #1 {main} thrown in /in/1W0ib on line 2
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Warning: "double" will be interpreted as a class name. Did you mean "float"? Write "\double" to suppress this warning in /in/1W0ib on line 2 Warning: "double" will be interpreted as a class name. Did you mean "float"? Write "\double" to suppress this warning in /in/1W0ib on line 2 Fatal error: Uncaught TypeError: add(): Argument #1 ($a) must be of type double, float given, called in /in/1W0ib on line 6 and defined in /in/1W0ib:2 Stack trace: #0 /in/1W0ib(6): add(1, 2) #1 {main} thrown in /in/1W0ib on line 2
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Argument 1 passed to add() must be an instance of double, float given, called in /in/1W0ib on line 6 and defined in /in/1W0ib:2 Stack trace: #0 /in/1W0ib(6): add(1, 2) #1 {main} thrown in /in/1W0ib on line 2
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Catchable fatal error: Argument 1 passed to add() must be an instance of double, double given, called in /in/1W0ib on line 6 and defined in /in/1W0ib on line 2
Process exited with code 255.

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