Php pass metode sebagai panggilan balik

Kita bisa membuat variabel global baru. Ini terlalu jelek. Kita dapat menulis ulang atau membuat subkelas dari kelas Yii. Tapi ini hanya menciptakan banyak pekerjaan dan kemungkinan pemeliharaan di masa depan

Tidak, jawabannya sebenarnya sangat sederhana. Yang harus kita lakukan adalah meneruskan nilai tambahan di luar lingkup anonim dengan direktif use

Ini adalah kutipan dari Yii2 GridView di mana saya mendeklarasikan tindakan untuk tombol "Hapus". Line 6 adalah tempat ActionColumn akan meneruskan variabel $url, $model dan $key ke fungsi callback

    [
        'class' => yii\grid\ActionColumn::class,
        'template' => '{delete}',
        'buttons' => [
            'delete' => function($url, $model, $key) {
                return Html::a(FAS::icon(FAS::_TRASH),
                    $url,
                    [
                        'data-action' => 'delete',
                        'data-confirm-string' => 'Are you sure you want to remove this User Group?',
                        'data-request' => $url,
                        'data-pjax-container' => '#user-group-assignment-grid',
                        'class' => 'user-group-assignment-action',
                    ]);
            },
        ],
    ],

Alih-alih menetapkan nilai

// Set pjax container id
$pjaxContainer = 'user-group-assignment-grid';

    ...

    // Define ActionColumn within GridView
    [
        'class' => yii\grid\ActionColumn::class,
        'template' => '{delete}',
        'buttons' => [
            'delete' => function($url, $model, $key) use ($pjaxContainer) {
                return Html::a(FAS::icon(FAS::_TRASH),
                    $url,
                    [
                        'data-action' => 'delete',
                        'data-confirm-string' => 'Are you sure you want to remove this User Group?',
                        'data-request' => $url,
                        'data-pjax-container' => '#' . $pjaxContainer,
                        'class' => 'user-group-assignment-action',
                    ]);
            },
        ],
    ],

// Set pjax container id
$pjaxContainer = 'user-group-assignment-grid';

    ...

    // Define ActionColumn within GridView
    [
        'class' => yii\grid\ActionColumn::class,
        'template' => '{delete}',
        'buttons' => [
            'delete' => function($url, $model, $key) use ($pjaxContainer) {
                return Html::a(FAS::icon(FAS::_TRASH),
                    $url,
                    [
                        'data-action' => 'delete',
                        'data-confirm-string' => 'Are you sure you want to remove this User Group?',
                        'data-request' => $url,
                        'data-pjax-container' => '#' . $pjaxContainer,
                        'class' => 'user-group-assignment-action',
                    ]);
            },
        ],
    ],

// Set pjax container id
$pjaxContainer = 'user-group-assignment-grid';

    ...

    // Define ActionColumn within GridView
    [
        'class' => yii\grid\ActionColumn::class,
        'template' => '{delete}',
        'buttons' => [
            'delete' => function($url, $model, $key) use ($pjaxContainer) {
                return Html::a(FAS::icon(FAS::_TRASH),
                    $url,
                    [
                        'data-action' => 'delete',
                        'data-confirm-string' => 'Are you sure you want to remove this User Group?',
                        'data-request' => $url,
                        'data-pjax-container' => '#' . $pjaxContainer,
                        'class' => 'user-group-assignment-action',
                    ]);
            },
        ],
    ],

// Set pjax container id
$pjaxContainer = 'user-group-assignment-grid';

    ...

    // Define ActionColumn within GridView
    [
        'class' => yii\grid\ActionColumn::class,
        'template' => '{delete}',
        'buttons' => [
            'delete' => function($url, $model, $key) use ($pjaxContainer) {
                return Html::a(FAS::icon(FAS::_TRASH),
                    $url,
                    [
                        'data-action' => 'delete',
                        'data-confirm-string' => 'Are you sure you want to remove this User Group?',
                        'data-request' => $url,
                        'data-pjax-container' => '#' . $pjaxContainer,
                        'class' => 'user-group-assignment-action',
                    ]);
            },
        ],
    ],

Bagaimana cara melewatkan fungsi callback di PHP?