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<?php function isPerfect($n) { return count($n)==4&&$n[0]*$n[1]*$n[2]*$n[3]+1==pow(pow($n[0],2)+3*$n[0]+1,2); } var_dump(isPerfect(['a','b','c','d']));
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
Fatal error: Uncaught TypeError: Unsupported operand types: string * string in /in/jNGfM:4 Stack trace: #0 /in/jNGfM(7): isPerfect(Array) #1 {main} thrown in /in/jNGfM 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 Fatal error: Uncaught TypeError: Unsupported operand types: string * string in /in/jNGfM:4 Stack trace: #0 /in/jNGfM(7): isPerfect(Array) #1 {main} thrown in /in/jNGfM on line 4
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: A non-numeric value encountered in /in/jNGfM on line 4 Warning: A non-numeric value encountered in /in/jNGfM on line 4 Warning: A non-numeric value encountered in /in/jNGfM on line 4 Warning: A non-numeric value encountered in /in/jNGfM on line 4 Warning: A non-numeric value encountered in /in/jNGfM on line 4 Warning: A non-numeric value encountered in /in/jNGfM on line 4 bool(true)
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
bool(true)
preferences:
208.59 ms | 402 KiB | 256 Q