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run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = array(); $a[] = array(); var_dump(empty($a)); var_dump(isset($a)); var_dump(count($a)); //var_dump($a); $b = array_filter($a); var_dump(empty($b)); var_dump(empty(1 + 2));
Output for 5.5.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(false) bool(true) int(1) bool(true) bool(false)
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '1' (T_LNUMBER) in /in/ktlcu on line 12
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_LNUMBER in /in/ktlcu on line 12
Process exited with code 255.
Output for 5.2.3 - 5.2.17
Parse error: syntax error, unexpected T_LNUMBER, expecting T_STRING or T_VARIABLE or '$' in /in/ktlcu on line 12
Process exited with code 255.
Output for 5.1.0 - 5.2.2
<br /> <b>Parse error</b>: syntax error, unexpected T_LNUMBER, expecting T_STRING or T_VARIABLE or '$' in <b>/in/ktlcu</b> on line <b>12</b><br />
Process exited with code 255.
Output for 5.0.0 - 5.0.5
<br /> <b>Parse error</b>: parse error, unexpected T_LNUMBER, expecting T_STRING or T_VARIABLE or '$' in <b>/in/ktlcu</b> on line <b>12</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 '$' in <b>/in/ktlcu</b> on line <b>12</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
<br /> <b>Parse error</b>: parse error, unexpected T_LNUMBER, expecting T_VARIABLE or '$' in <b>/in/ktlcu</b> on line <b>12</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/ktlcu</b> on line <b>12</b><br />
Process exited with code 255.