$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 3.0.135

Twitter updates

  • New post: A look at two new WireMail modules for sending email, plus details on how you can configure ProcessWire to use Gmail for sending email— More
    19 July 2019
  • New post: Version 3.0.135 of ProcessWire on the dev branch focuses on some .htaccess updates, adds clarity to debug mode, and improves upon the installer— More
    5 July 2019
  • ProcessWire 3.0.133 adds a useful new Page::meta() method for a new type of page-specific persistent data storage, adds the ability for users to create their own bookmarks in Lister, and has a handy and time saving update for the asmSelect input type— More
    14 June 2019

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    Blog / 19 July 2019
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