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<?php $simpsons[0] = array("name"=>"Abe","parent"=>-1); $simpsons[1] = array("name"=>"Homer","parent"=>0); // Homer's parent is Abe $simpsons[2] = array("name"=>"Bart","parent"=>1); // Bart's parent is Homer $simpsons[3] = array("name"=>"Lisa","parent"=>1); // Lisa's parent is Homer $simpsons[4] = array("name"=>"Maggie","parent"=>1); // Maggie's parent is Homer function get_children($parent) { foreach ($_GLOBALS['simpsons'] as $index=>$onesimpson) { if ($onesimpson["parent"]==$parent) { echo "$onesimpson[name] is a child of ".$_GLOBALS['simpsons'][$parent]["name"].".<br />\n"; get_children($index); } } } get_children(0); ?>
Output for 5.2.1 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined variable: _GLOBALS in /in/RK8iV on line 10 Warning: Invalid argument supplied for foreach() in /in/RK8iV on line 10
Output for hhvm-3.10.0 - 3.13.2
Notice: Undefined variable: _GLOBALS in /in/RK8iV on line 10 Warning: Invalid argument supplied for foreach() in /in/RK8iV on line 15
Output for 4.3.0 - 4.3.10, 4.4.0 - 5.2.0
Warning: Invalid argument supplied for foreach() in /in/RK8iV on line 10
Output for 4.3.11