Online PHP editor | output for XlWnm

@ 2013-04-02T07:15:10Z

<?php

$minAge = 86400; // 24h

$rows = array(
    'import_1364893316_foobar',
	'import_1364893306_foobar',
	'import_1364893216_foobar',
	'import_1364892316_foobar',
	'import_1364883316_foobar',
	'import_1364793316_foobar',
	'import_1363893316_foobar',
	'import_1354893316_foobar',
	'import_1354893416',
	'import_1354893316',
);

$drops = array();

$maxCreatedAt = true === $minAge 
    ? time() - $minAge 
    : time() + 1;

foreach ($rows as $row) {
    if (preg_match('/_([0-9]+)[0-9]{6}[_a-zA-Z]*$/', $row, $matches)) {
        var_dump($matches[1]);
        if ($maxCreatedAt > (int) $matches[1]) {
            $drops[] = $row;
        }
    }
}

var_dump($drops);

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, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0: string(4) "1364" string(4) "1364" string(4) "1364" string(4) "1364" string(4) "1364" string(4) "1364" string(4) "1363" string(4) "1354" string(4) "1354" string(4) "1354" array(10) { [0]=> string(24) "import_1364893316_foobar" [1]=> string(24) "import_1364893306_foobar" [2]=> string(24) "import_1364893216_foobar" [3]=> string(24) "import_1364892316_foobar" [4]=> string(24) "import_1364883316_foobar" [5]=> string(24) "import_1364793316_foobar" [6]=> string(24) "import_1363893316_foobar" [7]=> string(24) "import_1354893316_foobar" [8]=> string(17) "import_1354893416" [9]=> string(17) "import_1354893316" }

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