3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo ("0x15" + 1),"\n"; //0x16 == 22 var_dump("0x" . dechex(15) + 0); //15 echo (("0x" . dechex(15)) + 1); //16
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: A non-numeric value encountered in /in/WrQuW on line 2 1 Fatal error: Uncaught TypeError: Unsupported operand types: string + int in /in/WrQuW:3 Stack trace: #0 {main} thrown in /in/WrQuW on line 3
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/WrQuW on line 3 Notice: A non well formed numeric value encountered in /in/WrQuW on line 2 1 Notice: A non well formed numeric value encountered in /in/WrQuW on line 3 int(0) Notice: A non well formed numeric value encountered in /in/WrQuW on line 4 1
Output for 7.0.0 - 7.0.33, 7.3.32 - 7.3.33
1 int(0) 1
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31
Notice: A non well formed numeric value encountered in /in/WrQuW on line 2 1 Notice: A non well formed numeric value encountered in /in/WrQuW on line 3 int(0) Notice: A non well formed numeric value encountered in /in/WrQuW on line 4 1
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
22 int(15) 16

preferences:
245.7 ms | 402 KiB | 330 Q