Standard form posting with jQuery to php does not get all index values? -

i'm trying submit form php somehow not data passed php?

jquery initialized post this:

var fieldsdata = $('form').serialize() $.post( "index.php",  fieldsdata, function(data){     console.log( data ); }); 

.. fieldsdata variable try send server (i test in console)

[   {     "name": "form_key",     "value": "feyzybqefjjtkzai"   },   {     "name": "shipment_item_3",     "value": ""   },   {     "name": "shipment[items][3]_1",     "value": "21"   },   {     "name": "shipment[items][3]_2",     "value": "22"   },   {     "name": "shipment[items][3]_3",     "value": "31"   },   {     "name": "shipment[items][3]_4",     "value": "42"   },   {     "name": "warehouse-shipment[items][3]_1",     "value": "1"   },   {     "name": "warehouse-shipment[items][3]_2",     "value": "1"   },   {     "name": "warehouse-shipment[items][3]_3",     "value": "1"   },   {     "name": "warehouse-shipment[items][3]_4",     "value": "1"   },   {     "name": "lotnumber-shipment[items][3][1]_1",     "value": "4"   },   {     "name": "lotnumber-shipment[items][3][1]_2",     "value": "5"   },   {     "name": "lotnumber-shipment[items][3][1]_3",     "value": "5"   },   {     "name": "lotnumber-shipment[items][3][1]_4",     "value": "6"   },   {     "name": "shipment_item_4",     "value": ""   },   {     "name": "shipment[items][4]_1",     "value": "7"   },   {     "name": "warehouse-shipment[items][4]_1",     "value": "1"   },   {     "name": "lotnumber-shipment[items][4][1]_1",     "value": "7"   },   {     "name": "shipment[comment_text]",     "value": ""   } ] 

when execute call i'm monitoring network tab in inspector , can confirm form data send server correct:

and have 1 line of code inside index.php file,, debug info:

var_dump($_post);die('e'); 

and get:

/var/www/html/inventory174/index.php:27: array (size=6)   'form_key' => string 'feyzybqefjjtkzai' (length=16)   'shipment_item_3' => string '' (length=0)   'shipment' =>      array (size=2)       'items' =>          array (size=2)           3 => string '42' (length=2)           4 => string '7' (length=1)       'comment_text' => string '' (length=0)   'warehouse-shipment' =>      array (size=1)       'items' =>          array (size=2)           3 => string '1' (length=1)           4 => string '1' (length=1)   'lotnumber-shipment' =>      array (size=1)       'items' =>          array (size=2)           3 =>              array (size=1)               ...           4 =>              array (size=1)               ...   'shipment_item_4' => string '' (length=0) e 

i see example variable shipment[items][3]_x not pass keys two.. guess i'm facing somekind of variable name convention limit don's know what,, if can take fresh on data alot!

also have tested form valid, this: $('edit_form').checkvalidity() , true back.. guess that's ok

update1: add form markup -> https://jsfiddle.net/zfn98tha/1/ update2: output $_request -> https://jsfiddle.net/zfn98tha/2/

because posting data php need format form field names valid array structure. rename shipment[items][3]_x shipment[items][3][x] , should indexes.