$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 3.0.163

Twitter updates

  • This week ProcessWire version 3.0.166 is released on the dev branch. In this post we’ll cover all that’s new relative to the previous version, 3.0.165. Plus we’ll check out the latest new versions of ProCache and FormBuilder— More
    11 September 2020
  • Weekly update – 28 August 2020 – New secure files option defined per-template: More
    28 August 2020
  • ProcessWire 3.0.165 core updates (master and dev branch) and reCAPTCHA for FormBuilder module— More
    21 August 2020

Latest news

  • ProcessWire Weekly #331
    In the 331st issue of ProcessWire Weekly we're going to check out the latest core and Pro module updates (ProcessWire 3.0.166, ProCache 4.0.1, and Form Builder v44), introduce the Wireframe API module, and more. Read on!
    Weekly.pw / 12 September 2020
  • ProcessWire 3.0.166 core updates and more
    This week ProcessWire version 3.0.166 is released on the dev branch. In this post we’ll cover all that’s new relative to the previous version, 3.0.165. Plus we’ll check out the latest new versions of ProCache and FormBuilder.
    Blog / 11 September 2020
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I just love the easy and intuitive ProcessWire API. ProcessWire rocks!” —Jens Martsch, Web developer