3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo (int) empty(0) . "\n"; echo (int) empty(1) . "\n"; echo (int) empty("") . "\n"; echo (int) empty("hello") . "\n"; echo (int) empty(empty(empty(0))); echo 3;
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
1 0 1 0 13
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '0' (T_LNUMBER) in /in/d9v4f on line 3
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_LNUMBER in /in/d9v4f on line 3
Process exited with code 255.
Output for 5.2.3 - 5.2.17
Parse error: syntax error, unexpected T_LNUMBER, expecting T_STRING or T_VARIABLE or '$' in /in/d9v4f on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
<br /> <b>Parse error</b>: syntax error, unexpected T_LNUMBER, expecting T_STRING or T_VARIABLE or '$' in <b>/in/d9v4f</b> on line <b>3</b><br />
Process exited with code 255.
Output for 5.0.0 - 5.0.5
<br /> <b>Parse error</b>: parse error, unexpected T_LNUMBER, expecting T_STRING or T_VARIABLE or '$' in <b>/in/d9v4f</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.4.2 - 4.4.9
<br /> <b>Parse error</b>: syntax error, unexpected T_LNUMBER, expecting T_VARIABLE or '$' in <b>/in/d9v4f</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
<br /> <b>Parse error</b>: parse error, unexpected T_LNUMBER, expecting T_VARIABLE or '$' in <b>/in/d9v4f</b> on line <b>3</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.3.4
<br /> <b>Parse error</b>: parse error, expecting `T_VARIABLE' or `'$'' in <b>/in/d9v4f</b> on line <b>3</b><br />
Process exited with code 255.

preferences:
261.34 ms | 402 KiB | 387 Q