Register a callback to provide updates during archive close.

# ZipArchive::registerProgressCallback

(PHP >= 8.0.0, PECL zip >= 1.17.0)

ZipArchive::registerProgressCallback — Register a callback to provide updates during archive close.

### Beschreibung

public function ZipArchive::registerProgressCallback(float `$rate`, callable `$callback`): bool

Register a `callback` function to provide updates during archive close.

### Parameter-Liste

`rate`
  Change between each call of the callback (from 0.0 to 1.0).
`callback`
  This function will receive the current `state` as a float (from 0.0 to 1.0).

### Rückgabewerte

Gibt bei Erfolg `true` zurück. Bei einem Fehler wird `false` zurückgegeben.

### Beispiele

This example creates a ZIP file archive php.zip and show progression.

Beispiel #1 Archive a file

    $zip = new ZipArchive();
    if ($zip->open('php.zip', ZipArchive::CREATE | ZipArchive::OVERWRITE)) {
        $zip->addFile(PHP_BINARY, 'php');
        $zip->registerProgressCallback(0.05, function ($r) {
            printf("%d%%\n", $r * 100);
        });
        $zip->close();
    }

### Anmerkungen

> Hinweis: This function is only available if built against libzip ≥ 1.3.0.

### Siehe auch

- ZipArchive::registerCancelCallback() - Register a callback to allow cancellation during archive close.

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