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run code in 200+ php & hhvm versions
Bugs & Features
<?php $var = 0; function format(array &$collection) { foreach($collection as $k => $v) { $collection["prefix_{$k}"] = $v; } } var_dump($collection); format($collection); var_dump($collection);
Output for 7.0.0 - 7.1.10
Notice: Undefined variable: collection in /in/SVOlk on line 8 NULL Fatal error: Uncaught TypeError: Argument 1 passed to format() must be of the type array, null given, called in /in/SVOlk on line 9 and defined in /in/SVOlk:3 Stack trace: #0 /in/SVOlk(9): format(NULL) #1 {main} thrown in /in/SVOlk on line 3
Process exited with code 255.
Output for 5.4.0 - 5.6.28
Notice: Undefined variable: collection in /in/SVOlk on line 8 NULL Catchable fatal error: Argument 1 passed to format() must be of the type array, null given, called in /in/SVOlk on line 9 and defined in /in/SVOlk on line 3
Process exited with code 255.
Output for 5.2.0 - 5.3.29
Notice: Undefined variable: collection in /in/SVOlk on line 8 NULL Catchable fatal error: Argument 1 passed to format() must be an array, null given, called in /in/SVOlk on line 9 and defined in /in/SVOlk on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.6
Notice: Undefined variable: collection in /in/SVOlk on line 8 NULL Fatal error: Argument 1 passed to format() must not be null, called in /in/SVOlk on line 9 and defined in /in/SVOlk on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_ARRAY, expecting '&' or T_VARIABLE in /in/SVOlk on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_ARRAY, expecting ')' in /in/SVOlk 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 T_ARRAY, expecting ')' in /in/SVOlk on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/SVOlk on line 3
Process exited with code 255.