3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr =array("abc"=>"","s"=>""); $set_errors = array_keys( $errors, true ); print_r($set_errors);
Output for 5.3.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: errors in /in/WHVKA on line 4 Warning: array_keys() expects parameter 1 to be array, null given in /in/WHVKA on line 4
Output for hhvm-3.10.0 - 3.12.0
Notice: Undefined variable: errors in /in/WHVKA on line 4 Warning: array_keys() expects parameter 1 to be an array or collection in /in/WHVKA on line 4
Output for 5.0.4 - 5.2.17
Notice: Undefined variable: errors in /in/WHVKA on line 4 Warning: array_keys(): The first argument should be an array in /in/WHVKA on line 4
Output for 4.3.2 - 5.0.3
Notice: Undefined variable: errors in /in/WHVKA on line 4 Warning: array_keys(): The first argument should be an array in /in/WHVKA on line 4
Output for 4.3.0 - 4.3.1
Notice: Undefined variable: errors in /in/WHVKA on line 4 Warning: array_keys() [http://www.php.net/function.array-keys]: The first argument should be an array in /in/WHVKA on line 4