3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr=Array ( 0 => Array ( "Title" => "La science des rĂªves", "Year" => "2006", "Director" => Array ( "Name" => "Michel Gondry", "BirthYear" => "1963", "BirthPlace" => "Versailles, Yvelines, France" ) ), 1 => Array ( "Title" => "Arizona Dream", "Year" => "1992", "Director" => Array ( "Name" => "Emir Kusturica", "BirthYear" => "1954", "BirthPlace" => "Sarajevo, Bosnia and Herzegovina, Yugoslavia" ) ) ); $ck=Array ( 0 => "Title", 1 => "Director.Name", 2 => "Director.BirthYear" ); $newarray=array(); foreach($ck as $ck2) { $k = explode(".",$ck2); print_r($k[0]); }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.29 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
TitleDirectorDirector

preferences:
216.8 ms | 405 KiB | 311 Q