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run code in 300+ PHP versions simultaneously
<?php $x = 4; // this line might result in unexpected output: echo "x minus one equals " . $x-1 . ", or so I hope\n"; // because it is evaluated like this line: echo (("x minus one equals " . $x) - 1) . ", or so I hope\n"; // the desired precendence can be enforced by using parentheses: echo "x minus one equals " . ($x-1) . ", or so I hope\n";
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
x minus one equals 3, or so I hope Fatal error: Uncaught TypeError: Unsupported operand types: string - int in /in/hQhOu:6 Stack trace: #0 {main} thrown in /in/hQhOu on line 6
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 x minus one equals 3, or so I hope Fatal error: Uncaught TypeError: Unsupported operand types: string - int in /in/hQhOu:6 Stack trace: #0 {main} thrown in /in/hQhOu on line 6
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Deprecated: The behavior of unparenthesized expressions containing both '.' and '+'/'-' will change in PHP 8: '+'/'-' will take a higher precedence in /in/hQhOu on line 4 Warning: A non-numeric value encountered in /in/hQhOu on line 4 -1, or so I hope Warning: A non-numeric value encountered in /in/hQhOu on line 6 -1, or so I hope x minus one equals 3, or so I hope
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33
Warning: A non-numeric value encountered in /in/hQhOu on line 4 -1, or so I hope Warning: A non-numeric value encountered in /in/hQhOu on line 6 -1, or so I hope x minus one equals 3, or so I hope
Output for 7.0.0 - 7.0.31
-1, or so I hope -1, or so I hope x minus one equals 3, or so I hope
preferences:
190.14 ms | 401 KiB | 202 Q