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@ 2016-09-16T08:48:55Z

<?php
$cities = array(
    'name' =>  array("London","Brighton"),
    'population' => array("12000000","500000")
);

$array=array();
$array['firstname']="John";
$array['lastname']="Doe";
$array['cities'][] = $cities;
echo json_encode($array);

Output
Performance
VLD
References
Branches

json_encode: documentation ( source)

preferences:dark modelive previewkey bindings

32.17 ms | 404 KiB | 5 Q