PHP code example of shinsenter / defer.php

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

shinsenter / defer.php example snippets

// Include the library
 from here

// Include the library
ect
$defer = new \AppSeeds\Defer();

// Read HTML source from file
$html_source = file_get_contents('mypage.html');

// Then get the optimized output
$result = $defer->fromHtml($html_source)->toHtml($html);
var_dump($result);

// You can use the same instance to keep loading another HTML and optimize it
$result2 = $defer->fromHtml(file_get_contents('otherpage.html'))->toHtml();
var_dump($result2);

// Include the library
s
$options = [
  // Insert debug information inside the output HTML after optimization.
  // Debug information will contain outer HTMLs of tags before being optimized.
  // Default: false (turn off the debug information)
  'debug_mode' => false,

  // Although defer.js is the soul of this library,
  //   in some regions, you may want to serve defer.js library locally
  //   due to The General Data Protection Regulation (EU).
  // See: https://en.wikipedia.org/wiki/General_Data_Protection_Regulation
  // If you need to manually insert the defer.js library yourself,
  //   please enable this option to true.
  // Default: false (always automatically insert defer.js library)
  'manually_add_deferjs' => false,

  // URL to defer.js javascript file.
  // Default: https://cdn.jsdelivr.net/npm/@shinsenter/[email protected]/dist/defer_plus.min.js
  'deferjs_src'  => \AppSeeds\DeferConstant::SRC_DEFERJS_CDN,

  // URL to javascript contains fixes.
  // for some older browsers that do not support IntersectionObserver feature.
  // Default: https://polyfill.io/v3/polyfill.min.js?features=IntersectionObserver
  'polyfill_src' => \AppSeeds\DeferConstant::SRC_POLYFILL_CDN,

  // Inline the defer.js library to minimize download time in the browser.
  // Default: true (always automatically inline defer.js library)
  'inline_deferjs' => true,

  // ---------------------------------------------------------------------------

  // This option moves all stylesheets to bottom of the head tag,
  //   and moves script tags to bottom of the body tag
  // See: https://web.dev/render-blocking-resources/
  // Default: true (always automatically fix render blocking)
  'fix_render_blocking' => true,

  // Turn on optimization for stylesheets
  // This option applies to style and link[rel="stylesheet"] tags.
  // Best practices: https://web.dev/extract-critical-css/
  // Default: true (automatically optimize stylesheets)
  'optimize_css'        => true,

  // Optimize script tags (both inline and external scripts).
  // Note: The library only minify for inline script tags.
  // See: https://web.dev/unminified-javascript/
  // Default: true (automatically optimize script tags)
  'optimize_scripts'    => true,

  // Optimize img, picture, video, audio and source tags.
  // See: https://web.dev/browser-level-image-lazy-loading/
  // See: https://web.dev/lazy-loading-images/
  // Default: true (automatically optimize)
  'optimize_images'     => true,

  // Optimize iframe, frame, embed tags.
  // See: https://web.dev/lazy-loading-video/
  // Default: true (automatically optimize)
  'optimize_iframes'    => true,

  // Optimize tags that containing CSS for loading images from external sources.
  // For example, style properties contain background-image:url() etc.
  // See: https://web.dev/optimize-css-background-images-with-media-queries/
  // Default: true (automatically optimize)
  'optimize_background' => true,

  // Create noscript tags so lazy-loaded elements can still display
  //   even when the browser doesn't have javascript enabled.
  // This option applies to all tags that have been lazy-loaded.
  // See: https://web.dev/without-javascript/
  // Default: true (automatically create fallback noscript tags)
  'optimize_fallback'   => true,

  // Optimize anchor tags, fix unsafe links to cross-origin destinations
  // See: https://web.dev/external-anchors-use-rel-noopener/
  // Default: true (automatically optimize)
  'optimize_anchors' => true,

  // Add missing meta tags such as meta[name="viewport"], meta[charset] etc.
  // See: https://web.dev/viewport/
  // Default: true (automatically optimize)
  'add_missing_meta_tags' => true,

  // Preconnect to 

// Include the library
function
function ob_deferphp($html) {
  // Create a Defer object
  $defer = new \AppSeeds\Defer([
    /* declare options here */
  ]);

  return $defer->fromHtml($html)->toHtml();
}

// Call ob_start() function to create an output buffer
//   and pass above callback function name as its argument.
// This function should be called before any other process to print the content.
ob_start('ob_deferphp');

// .......... (place your PHP code here)

// And call this to flush optimized output HTML
//   right before you send the final HTML to browser.
ob_end_flush();

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