Question

我有这样的数组。有一些名称相同的数组。例如Grant 1，Grant 2 ......他们有许多应该在同一个地方的项目。例如：Grant 1应包含属于Grant 1的信息。与Grant 2相同的事情。依此类推

array:5 [▼
  0 => array:2 [▼
    0 => "Grant 1"
    1 => Project {#423 ▶}
  ]
  1 => array:2 [▼
    0 => "Grant 1"
    1 => Project {#421 ▶}
  ]
  2 => array:2 [▼
    0 => "Grant 2"
    1 => Project {#412 ▶}
  ]
  3 => array:2 [▼
    0 => "Grant 1"
    1 => Project {#424 ▶}
  ]
  4 => array:2 [▼
    0 => "Grant 2"
    1 => Project {#419 ▶}
  ]
]

我想将它们合并到：

array:5 [▼
  0 => array:2 [▼
    0 => "Grant 1"
    1 => Project {#423 ▶}
    2 => Project {#421 ▶}
    3 => Project {#424 ▶}
  ]
  1 => array:2 [▼
    0 => "Grant 1"        
    1 => Project {#412 ▶}
    2 => Project {#419 ▶}
  ]
]

请帮忙。谢谢，

Answer 1

我认为你可以使用foreach：

$newArray = [];
foreach ($array as $value) {
    $newArray[$value[0]][] = $value[1];
}

你有这样的数组：

array:5 [▼
  "Grant 1" => array:2 [▼
    1 => Project {#423 ▶}
    2 => Project {#421 ▶}
    3 => Project {#424 ▶}
  ]
  "Grant 2" => array:2 [▼ 
    1 => Project {#412 ▶}
    2 => Project {#419 ▶}
  ]
]

或类似的东西（感谢@AbraCadaver）：

$newArray = [];
foreach ($array as $value) {
    if (isset($newArray[$value[0]] {
        $newArray[$value[0]][] = $value[1];
    } else {
        $newArray[$value[0]] = $value;
    }
}

数组你需要的东西：

array:5 [▼
    0 => array:2 [▼
        0 => "Grant 1"
        1 => Project {#423 ▶}
        2 => Project {#421 ▶}
        3 => Project {#424 ▶}
  ]
    1 => array:2 [▼
        0 => "Grant 1"        
        1 => Project {#412 ▶}
        2 => Project {#419 ▶}
  ]
]

如何将多个数组与相同的键组合？

1 个答案: