3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $c = 'Al(OH)3'; $n = preg_replace('/\.*OH\)(/d)/i', $1, $c); echo $n;
Output for 7.0.0 - 7.1.7
Parse error: syntax error, unexpected '1' (T_LNUMBER), expecting variable (T_VARIABLE) or '{' or '$' in /in/jDbLF on line 5
Process exited with code 255.
Output for hhvm-3.15.4
Fatal error: Uncaught Error: syntax error, unexpected T_LNUMBER, expecting T_VARIABLE or T_PIPE_VAR or '{' or '$' in /in/jDbLF:5 Stack trace: #0 {main}
Process exited with code 255.
Output for 5.6.0 - 5.6.30
Parse error: syntax error, unexpected '1' (T_LNUMBER), expecting variable (T_VARIABLE) or '$' in /in/jDbLF on line 5
Process exited with code 255.