$pages->uncacheAll() method

Remove all pages from the cache (to clear memory)

This method clears all pages that ProcessWire has cached in memory, making room for more pages to be loaded. Use of this method (along with pagination) may be necessary when modifying or calculating from thousand of pages.

Example

// calculate total dollar value of all 50000+ products in inventory
$total = 0;
$start = 0;
$limit = 500;

do {
  $products = $pages->find("template=product, start=$start, limit=$limit");
  if(!$products->count()) break;
  foreach($products as $product) {
    $total += ($product->qty * $product->price);
  }
  unset($products);
  $start += $limit;
  // clear cache to make room for another 500 products
  $pages->uncacheAll();
} while(true);

echo "Total value of all products: $" . number_format($total);

Usage

// basic usage
$int = $pages->uncacheAll();

// usage with all arguments
$int = $pages->uncacheAll(Page $page = null, array $options = []);

Arguments

NameType(s)Description
page (optional)Page

Optional Page that initiated the uncacheAll

options (optional)array

Options to modify default behavior:

  • shallow (bool): By default, this method also calls $page->uncache(). To prevent that call, set this to true.

Return value

int

Number of pages uncached


$pages methods and properties

API reference based on ProcessWire core version 3.0.200

Twitter updates

  • New ProcessWire “User Activity” module version released (v5), this post covers what's new— More
    12 August 2022
  • New post: Multi-language field translation export/import — In this post we cover the details of a new module that enables export and import capabilities for multi-language fields in ProcessWire… More
    5 August 2022
  • Weekly update, July 29: Continuing upgrades to ProcessWire’s comments system and FormBuilder, along with a working example—More
    29 July 2022

Latest news

  • ProcessWire Weekly #430
    In the 430th issue of ProcessWire Weekly we're going to check out some brand new third party modules, a new site of the week, and more. Read on!
    Weekly.pw / 7 August 2022
  • Multi-language field translation export/import
    In this post we cover the details of a new module that enables export and import capabilities for multi-language fields in ProcessWire.
    Blog / 5 August 2022
  • Subscribe to weekly ProcessWire news

“We chose ProcessWire because of its excellent architecture, modular extensibility and the internal API. The CMS offers the necessary flexibility and performance for such a complex website like superbude.de. ProcessWire offers options that are only available for larger systems, such as Drupal, and allows a much slimmer development process.” —xport communication GmbH