3v4l.org

run code in 500+ PHP versions simultaneously

@ 2018-04-06T13:40:08Z

<?php

$v = Array(
    'ccrs_date',
    Array(
            'prelim_title_report_date',
            Array(
                    'additional_escrow_deposit_date',
                     Array(
                            'earnest_money_date',
                            Array(
                                    'acceptance_date',
                                    Array(
                                            'contract_date',
                                            Array(
                                                    'prelim_title_report_date',
                                                    'test'
                                                ),
                                            Array(
                                                    'test2' 
                                                )
                                        )

                                )

                        )

                )

        )
);

$ri = new RecursiveIteratorIterator(new RecursiveArrayIterator($v));
$result = [];
$d = null;
foreach ($ri as $k => $r) {
    if ($d !== ($cd = $ri->getDepth())) {    
        $d = $cd;
        if ($k === 0 && is_scalar($r)) {
            $result[] = $r;
        }
    }
}

print_r($result);

Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7: Array ( [0] => ccrs_date [1] => prelim_title_report_date [2] => additional_escrow_deposit_date [3] => earnest_money_date [4] => acceptance_date [5] => contract_date [6] => prelim_title_report_date )

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111.11 ms | 2022 KiB | 4 Q