3v4l.org

run code in 300+ PHP versions simultaneously
<?php function collapse($path, $collapse, &$result) { foreach($collapse AS $key => $value) { if(is_array($value)) { collapse($path . $key . "/", $value, $result); continue; } $result[] = $path . $value; } } $result = array(); $toCollapse = array( "bla.tif", "quux.tif", array("foo" => array("bar" => array("lorem" => array("ipsum.tif", "doler.tif")))), array("bar" => array("qux" => array("baz" => array("ipsum.tif", "ufo.tif")))) ); collapse("", $toCollapse, $result); print_r($result);
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 - 5.5.38, 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
Array ( [0] => bla.tif [1] => quux.tif [2] => 2/foo/bar/lorem/ipsum.tif [3] => 2/foo/bar/lorem/doler.tif [4] => 3/bar/qux/baz/ipsum.tif [5] => 3/bar/qux/baz/ufo.tif )
preferences:
302.41 ms | 406 KiB | 459 Q