Inline GTMetrix Image Optimizer

optimize.php

<?php

if(!isset($argv[1]) || strlen($argv[1]) < 5){
	echo 'usage php optimize.php "https://gtmetrix.com/reports/***YOUR_URL_HERE***/**YOUR_REPORT_ID_HERE**"';
	die();
}

$full_url = $argv[1];
$domain = strstr(str_replace('https://gtmetrix.com/reports/','',$full_url),'/',true);
$content = file_get_contents($full_url);

function parseImageLinks($content,$domain){
	preg_match_all('/<li>Losslessly compressing <a href="([^"]*)"([^<]*)>([^<]*)<\/a>([^<]*)<a href="([^"]*)"/s',$content,$matches);
	$images_to_upgrade = $matches[3];
	$reduction = $matches[4];
	$links_to_images = $matches[5];

	$links = [];

	foreach($images_to_upgrade as $key=>$image_url){
		$links[] = [
			'url' => "https://gtmetrix.com" . $links_to_images[$key],
			'path' => str_replace(['https://','http://',$domain.'/'],'',$image_url),
			'reduction' => trim(str_replace('. See ','',$reduction[$key]))
		];
	}

	return $links;
}

function downloadAndReplaceImage($image,$key,$count){
	echo "---- $key of $count ----\n";
	echo "Getting -> ${image['url']}";
	file_put_contents($image['path'], file_get_contents($image['url']));
	echo "\Put -> ${image['path']}\n";
	echo "\Result -> ${image['reduction']}\n\n";
}

$links = parseImageLinks($content,$domain);
$count = count($links);

foreach($links as $key => $link){
	downloadAndReplaceImage($link,$key+1,$count);
}