<?php
$polylines = [
'latitude' => array(73.9289238, 83.928392832, 03.293892832), 'longitude' => array(-122.29839238, 21.928918291, 30.203929832) ];
foreach ($polylines as $valor) {
foreach ($valor as $item) echo $item . "\n";
echo "\n";
}
//https://pt.stackoverflow.com/q/392407/101
PD9waHAKJHBvbHlsaW5lcyA9IFsgIAogICAgJ2xhdGl0dWRlJyA9PiBhcnJheSg3My45Mjg5MjM4LCA4My45MjgzOTI4MzIsIDAzLjI5Mzg5MjgzMiksCiAgICAnbG9uZ2l0dWRlJyA9PiBhcnJheSgtMTIyLjI5ODM5MjM4LCAyMS45Mjg5MTgyOTEsIDMwLjIwMzkyOTgzMikKXTsKZm9yZWFjaCAoJHBvbHlsaW5lcyBhcyAkdmFsb3IpIHsKICAgIGZvcmVhY2ggKCR2YWxvciBhcyAkaXRlbSkgZWNobyAkaXRlbSAuICJcbiI7CiAgICBlY2hvICJcbiI7Cn0KCi8vaHR0cHM6Ly9wdC5zdGFja292ZXJmbG93LmNvbS9xLzM5MjQwNy8xMDE=