Foreach has to foreach another array? for noodles.

subscription what if you need foreach in [] ?

$data[] = [
        "name" => $key["add_hour"].":00",
        "data" => [[  
          "x" => (int) $key["add_date"],
          "y" => (int) $key["times"]
        ]
        //  x  y]
      ];

like this

$data [] = [

]

    "name" => $key["add_hour"].":00",
    "data" => [[  
      "x" => (int) $key["add_date"],
      "y" => (int) $key["times"]
    ],
    [  
      "x" => (int) $key["add_date"],
      "y" => (int) $key["times"]
    ],
    [  
      "x" => (int) $key["add_date"],
      "y" => (int) $key["times"]
    ]]
  ];

Chart.js json jquery javascript php

Jan.21,2022

if the assignment process can be modified, nest the array directly in the data outer layer

$data[] = [
  'name' => '1',
  'data' => [
    ['x' => 1, 'y' => 2]
  ]
];

if it doesn't work, do the conversion through another loop

foreach ($data as &$item) {
  $item['data'] = [$item['data']];
}

< hr >

just nest directly in the loop

$data[] = [
  'name' => '1',
  'data' => [
    ['x' => 1, 'y' => 2],
    ['x' => 3, 'y' => 4]
  ]
];

foreach ($data as $item) {
  foreach ($item['data'] as $child) {
    var_dump($child); //array(2) { ["x"]=> int(1) ["y"]=> int(2) } array(2) { ["x"]=> int(3) ["y"]=> int(4) }
  }
}

if you need to manipulate an array, remember to add &

Previous: The display displays block, after the element floats in css, but why does it behave more like an inline block element?

Next: What is the relationship between the defaultAutoCommit and spring transaction management of the database pool and the underlying database settings?