Posting array from form

<input type="hidden" name="data[EstPriceInput]" value="" />

<input name="arrayname[item1]">
<input name="arrayname[item2]">
<input name="arrayname[item3]">

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<input name="arrayname[item1]">
<input name="arrayname[item2]">
<input name="arrayname[item3]">