Zend\Cache\Pattern\CaptureCache

Overview

The CaptureCache pattern is useful to auto-generate static resources in base of a HTTP request. The Webserver needs to be configured to run a PHP script generating the requested resource so further requests for the same resource can be shipped without calling PHP again.

It comes with basic logic to manage generated resources.

Quick Start

Simplest usage as Apache-404 handler

# .htdocs
ErrorDocument 404 /index.php

// index.php
use Zend\Cache\PatternFactory;
$capture = Zend\Cache\PatternFactory::factory('capture', array(
    'public_dir' => __DIR__,
));

// Start capturing all output excl. headers and write to public directory
$capture->start();

// Don't forget to change HTTP response code
header('Status: 200', true, 200);

// do stuff to dynamically generate output

Configuration Options

Option	Data Type	Default Value	Description
public_dir	string	<none>	Location of public directory to write output to
index_filename	string	“index.html”	The name of the first file if only a directory was requested
file_locking	boolean	true	Locking output files on writing
file_permission	integer boolean	0600 (false on win)	Set permissions of generated output files
dir_permission	integer boolean	0700 (false on win)	Set permissions of generated output directories
umask	integer boolean	false	Using umask on generating output files / directories

Available Methods

start(string|null $pageId = null)

Start capturing output.

Return type:void

set(string $content, string|null $pageId = null)

Write content to page identity.

Return type:void

get(string|null $pageId = null)

Get content of an already cached page.

Return type:string|false

has(string|null $pageId = null)

Check if a page has been created.

Return type:boolean

remove(string|null $pageId = null)

Remove a page.

Return type:boolean

clearByGlob(string $pattern = '**')

Clear pages matching glob pattern.

Return type:void

setOptions(Zend\Cache\Pattern\PatternOptions $options)

Set pattern options.

Return type:Zend\Cache\Pattern\CaptureCache

getOptions()

Get all pattern options.

Return type:Zend\Cache\Pattern\PatternOptions

Examples

Scaling images in base of request

# .htdocs
ErrorDocument 404 /index.php

// index.php
$captureCache = Zend\Cache\PatternFactory::factory('capture', array(
    'public_dir' => __DIR__,
));

// TODO