How to manipulate this array to get the following Cartesian product? Seek efficient method

//
const spec = [
  { label: "", content: ["", "", ""] },
  { label: "", content: ["", "", ""] },
  { label: "", content: ["", "", ""] }
];

//specdatas,spec0spec1spec2spec27

const datas = [
  {
    spec0: "",
    spec1: "",
    spec2: ""
  },
  {
    spec0: "",
    spec1: "",
    spec2: ""
  },
  {
    spec0: "",
    spec1: "",
    spec2: ""
  },
  {
    spec0: "",
    spec1: "",
    spec2: ""
  },
  {
    spec0: "",
    spec1: "",
    spec2: ""
  },
  {
    spec0: "",
    spec1: "",
    spec2: ""
  },
  {
    spec0: "",
    spec1: "",
    spec2: ""
  },
  {
    spec0: "",
    spec1: "",
    spec2: ""
  },
  {
    spec0: "",
    spec1: "",
    spec2: ""
  }
  //.....
];
Javascript html5 node.js php python
Jun.20,2022 


<?php<br>//<br>$sets = [


['', '', ''],
['', '', ''],
['', '']


]; 


 function fuck ($sets) 
 {


// 
$result = [];
// 
for ($i = 0, $count = count($sets); $i < $count - 1; $iPP) {
    // 
    if ($i == 0) {
        $result = $sets[$i];
    }
    // 
    $tmp = [];
    // 
    foreach ($result as $res) {
        foreach ($sets[$i + 1] as $set) {
            $tmp[] = $res . $set;
        }
    }
    // 
    $result = $tmp;
}

return $result;


} 


 var_dump (fuck ($sets));

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