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I have an array of values to store in the post meta, my post data looks like below JSON representation

[
  {
    "field_1": "value 1",
  },

  {
    "field_1": "value 2",
  },

  {
    "field_1": "value 3",
  },


]

And each item can have multiple keys like field_2, field_3 other than field_1, i have converted the JSON to array, and looped through each item and store in meta data by calling add_post_meta() function, but the problem arises when i want to have a duplicate in this list like this

    [
      {
        "field_1": "value 1",
      },
      {
        "field_1": "value 1",
      },
   ]

since i need the ability to update each item, i need to find a way to make the meta to properly update duplicate values, because update_post_meta take previous value and current value so if i update field_1 to any value, the second item might be updated to same value of first item, how to handle this problem?

本文标签： Can we have duplicate key pair values in post meta data

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