- json_encode: documentation ( source)
- array_walk: documentation ( source)
<?php
$x = array(1.0, 0.111111111111111111, 1/3, 1e300, 1e-300, M_PI);
array_walk($x, function($v) {
echo "$v" . PHP_EOL;
echo json_encode($v) . PHP_EOL;
echo PHP_EOL;
});