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run code in 200+ php & hhvm versions
Bugs & Features
<?php /** @author: Pavlo Matsura <webxid@ukr.net> */function _dump($str, $exit = false, $var_title = 1, $var_dump = false) {if (!$var_dump) {$buff = print_r($str, true);} else {ob_start();var_dump($str);$buff = ob_get_clean();}$dumps_html = "\nDeBuging Dump\n=============\n# " . $var_title . "\n" . "===================================\n\n" . $buff . "\n" . "===================================\n\n";echo $dumps_html;if ($exit) {exit();}} $rrr = [ 234 => [234,456,578], 657 => [234,456,578], 2354 => [234,456,578], 564 => [234,456,578], ]; _dump(array_keys($rrr)); /* ----------- */
Output for 5.6.30, hhvm-3.15.4 - 3.22.0, 7.0.0 - 7.2.9
DeBuging Dump ============= # 1 =================================== Array ( [0] => 234 [1] => 657 [2] => 2354 [3] => 564 ) ===================================