3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php print "A: ".empty(uniqid())."\n";
Output for 5.5.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
A:
Output for 5.2.3 - 5.4.45
Fatal error: Can't use function return value in write context in /in/rXRVA on line 3
Process exited with code 255.
Output for 5.0.0 - 5.2.2
<br /> <b>Fatal error</b>: Can't use function return value in write context in <b>/in/rXRVA</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.4.2 - 4.4.9
<br /> <b>Parse error</b>: syntax error, unexpected T_STRING, expecting T_VARIABLE or '$' in <b>/in/rXRVA</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
<br /> <b>Parse error</b>: parse error, unexpected T_STRING, expecting T_VARIABLE or '$' in <b>/in/rXRVA</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error, expecting `T_VARIABLE' or `'$'' in <b>/in/rXRVA</b> on line <b>3</b><br />
Process exited with code 255.