Defining multidimensional array while storing form data in JSON format in php -

i have convert form data json format. trying achieve this:-

{"appconfiguration" : {      "configuration_name" = "as400 configuration",     "configuration_version" = "1.001",     "connection" : [ {         "ip_address" : [    “10.10.10.01”,                             “10.10.10.02”,                             “10.10.10.03”                             // saved ip address.                         ]         "port" : "23"         "ssl" : "no",         "device_name" : "agicent device",         "name" : "puga",         "user" : "smart gladiator",         "password" : "sgl2013",         "barcode_enter" : "no",]}} 

this json should like. able store data in single-dimension array; how create structure this?

"connection":["ohiuh","ghu","ip_address":["something","something","something"]] 

try this

$arr = array('connection'=>array("ohiuh","ghu" , json_encode(array("ip_address"=>array("something","something","something"))))); echo json_encode($arr);