3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $text = 'Hello world'; $result = str_split($text); $result = array_map('ord', $result); $result = array_map('dechex', $result); var_dump("0x" . implode('', $result)); var_dump(pack('H*', $text));
based on VJqPD
Output for 5.0.0 - 5.6.28, 7.0.0 - 7.1.0
string(24) "0x48656c6c6f20776f726c64" Warning: pack(): Type H: illegal hex digit H in /in/aGoiZ on line 8 Warning: pack(): Type H: illegal hex digit l in /in/aGoiZ on line 8 Warning: pack(): Type H: illegal hex digit l in /in/aGoiZ on line 8 Warning: pack(): Type H: illegal hex digit o in /in/aGoiZ on line 8 Warning: pack(): Type H: illegal hex digit in /in/aGoiZ on line 8 Warning: pack(): Type H: illegal hex digit w in /in/aGoiZ on line 8 Warning: pack(): Type H: illegal hex digit o in /in/aGoiZ on line 8 Warning: pack(): Type H: illegal hex digit r in /in/aGoiZ on line 8 Warning: pack(): Type H: illegal hex digit l in /in/aGoiZ on line 8 string(6) "�"
Output for hhvm-3.12.0
string(24) "0x48656c6c6f20776f726c64" Warning: Invalid argument: Type H: illegal hex digit H in /in/aGoiZ on line 8 Warning: Invalid argument: Type H: illegal hex digit l in /in/aGoiZ on line 8 Warning: Invalid argument: Type H: illegal hex digit l in /in/aGoiZ on line 8 Warning: Invalid argument: Type H: illegal hex digit o in /in/aGoiZ on line 8 Warning: Invalid argument: Type H: illegal hex digit in /in/aGoiZ on line 8 Warning: Invalid argument: Type H: illegal hex digit w in /in/aGoiZ on line 8 Warning: Invalid argument: Type H: illegal hex digit o in /in/aGoiZ on line 8 Warning: Invalid argument: Type H: illegal hex digit r in /in/aGoiZ on line 8 Warning: Invalid argument: Type H: illegal hex digit l in /in/aGoiZ on line 8 string(6) "�"
Output for hhvm-3.10.0

Process exited with code 137.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: str_split() in /in/aGoiZ on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: str_split() in /in/aGoiZ on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: str_split() in /in/aGoiZ on line 3