3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo (int) empty(0) . "\n"; echo (int) empty(1) . "\n"; echo (int) empty("") . "\n"; echo (int) empty("hello") . "\n"; echo (int) empty(empty(0));
Output for 5.5.24 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
1 0 1 0 0
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.18 - 5.4.45
Parse error: syntax error, unexpected '0' (T_LNUMBER) in /in/ld1cc on line 2
Process exited with code 255.
Output for 5.4.0 - 5.4.17
Parse error: syntax error, unexpected '0' (T_LNUMBER) in /in/Wr252 on line 2
Process exited with code 255.
Output for 5.3.28 - 5.3.29
Parse error: syntax error, unexpected T_LNUMBER in /in/ld1cc on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.27
Parse error: syntax error, unexpected T_LNUMBER in /in/Wr252 on line 2
Process exited with code 255.
Output for 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_LNUMBER, expecting T_STRING or T_VARIABLE or '$' in /in/Wr252 on line 2
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_LNUMBER, expecting T_STRING or T_VARIABLE or '$' in /in/Wr252 on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_LNUMBER, expecting T_VARIABLE or '$' in /in/Wr252 on line 2
Process exited with code 255.
Output for 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_LNUMBER, expecting T_VARIABLE or '$' in /in/Wr252 on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/Wr252 on line 2
Process exited with code 255.
Output for 4.3.0
Parse error: parse error, unexpected T_LNUMBER, expecting T_VARIABLE or '$' in /in/ld1cc on line 2
Process exited with code 255.