$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 3.0.172

Twitter updates

  • ProcessWire 3.0.174 core updates: improvements to the new path/URL hooks and more— More
    12 March 2021
  • ProcessWire 3.0.173 adds several new requested features and this post focuses on one of my favorites: the ability to hook into and handle ProcessWire URLs, independent of pages— More
    5 March 2021
  • This week ProcessWire gained powerful new tools for finding pages and controlling how they are loaded. If you like to maximize performance and efficiency, you’ll like what 3.0.172 brings— More
    5 February 2021

Latest news

  • ProcessWire Weekly #357
    In the 357th issue of ProcessWire Weekly we'll check out ProcessWire 3.0.174, some forum highlights, and more. Read on!
    Weekly.pw / 14 March 2021
  • ProcessWire 3.0.173 core updates: New URL hooks
    ProcessWire 3.0.173 adds several new requested features and this post focuses on one of my favorites: the ability to hook into and handle ProcessWire URLs, independent of pages.
    Blog / 5 March 2021
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