3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo ("0x15" + 1),"\n"; var_dump("0x" . dechex(15)); echo (("0x" . dechex(15)) + 1);
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/bXlqB on line 2 1 string(3) "0xf" Warning: A non-numeric value encountered in /in/bXlqB on line 4 1
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: A non well formed numeric value encountered in /in/bXlqB on line 2 1 string(3) "0xf" Notice: A non well formed numeric value encountered in /in/bXlqB on line 4 1
Output for 7.0.0 - 7.0.20, 7.3.32 - 7.3.33
1 string(3) "0xf" 1
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
22 string(3) "0xf" 16

preferences:
136.21 ms | 402 KiB | 213 Q