3v4l.org

run code in 300+ PHP versions simultaneously

@ 2015-09-08T10:45:18Z

<?php
$array = array(
    array("title" => 1, "children" => array(
            array(
                "selected" => true,
                "key" => 100,
                "children" => array()
            )
        ),
                array(
                "selected" => true,
                "key" => 500,
                "children" => array()
            ),
        array(
                "selected" => true,
                "key" => 200,
                "children" => array(
                    array(
                        "selected" => true,
                        "key" => 300,
                        "children" => array(
                            array(
                                "selected" => true,
                                "key" => 400,
                                "children" => array()
                            )
                        )
                    )
                )
            )
    )    
);

$selectedValues = array();
            $iterator = new \RecursiveIteratorIterator(new \RecursiveArrayIterator($array));
            foreach ($iterator as $key => $value) {
                if ($key == "key") {
                    echo $value .PHP_EOL;
                    var_dump($iterator->current());
                }
            }

/*
        $selectedValues = array();
            $iterator = new \RecursiveIteratorIterator(new \RecursiveArrayIterator($array));
            foreach ($iterator as $key => $value) {
                if ($key == "selected") {
                    $depth       = $iterator->getDepth();
                    $subIterator = $iterator->getSubIterator($depth);
                    foreach ($subIterator as $key2 => $value2) {
                        if ($key2 == "key") {
                            echo $value2 . PHP_EOL;    
                        }
                    }  
                }
            }
            
            */

Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 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: 100 int(100) 500 int(500) 200 int(200) 300 int(300) 400 int(400)

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280.92 ms | 404 KiB | 376 Q