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