3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = "ZEESHAN"; $i =0; while(($string[$i])!=null){ $i++; } $i--; while(($string[$i])!=null){ echo $string[$i]; $i--; }
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
Warning: Uninitialized string offset 7 in /in/vfUFK on line 7 NAHSEEZNAHSEEZ Warning: Uninitialized string offset -8 in /in/vfUFK on line 15
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: Uninitialized string offset 7 in /in/vfUFK on line 7 NAHSEEZNAHSEEZ Warning: Uninitialized string offset -8 in /in/vfUFK on line 15
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Uninitialized string offset: 7 in /in/vfUFK on line 7 NAHSEEZNAHSEEZ Notice: Uninitialized string offset: -8 in /in/vfUFK on line 15
Output for 7.3.32 - 7.3.33
NAHSEEZNAHSEEZ
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
Notice: Uninitialized string offset: 7 in /in/vfUFK on line 7 NAHSEEZ Notice: Uninitialized string offset: -1 in /in/vfUFK on line 15
preferences:
246.05 ms | 402 KiB | 339 Q