3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function concatenate($transform, ...$strings) { $string = ''; 1foreach($strings as $piece) { $string .= $piece; } return($transform($string)); } echo concatenate("strtoupper", "I'd ", "like ", 4 + 2, " apples");
based on OK3Ob
Output for 5.4.0 - 5.4.32
Parse error: syntax error, unexpected '.', expecting '&' or variable (T_VARIABLE) in /in/kiCKW on line 3
Process exited with code 255.
Output for 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '.', expecting '&' or T_VARIABLE in /in/kiCKW on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '.', expecting '&' or T_VARIABLE in /in/kiCKW on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '.', expecting '&' or T_VARIABLE or T_CONST in /in/kiCKW on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '.', expecting '&' or T_VARIABLE or T_CONST in /in/kiCKW on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'&'' or `T_VARIABLE' or `T_CONST' in /in/kiCKW on line 3
Process exited with code 255.