par
chegmarco » 18 déc. 2019, 10:06
Bonjour et merci pour votre assistance.
Je préfère bien l'option de base "
Usage Basic" car me permettra de comparer chacun des
title entre eux, des
keywords entre eux, des
Descriptions entre elles et des
Urls aussi entre eux en fonction des
titles et
description bien sûr .
Mais encore une fois, je ne sais pas comment m'y prendre sachant que mes données sont stockés chacun dans des variables:
$titles,
$description,
$keywords et
$url.
Voici le Code complet de mon scraper:
Code : Tout sélectionner
// This is our starting point. Change this to whatever URL you want.
$start = "";
// Our 2 global arrays containing our links to be crawled.
$already_crawled = array();
$crawling = array();
function get_details($url) {
// The array that we pass to stream_context_create() to modify our User Agent.
$options = array('http'=>array('method'=>"GET", 'headers'=>"User-Agent: Chegspider/0.1\n"));
// Create the stream context.
$context = stream_context_create($options);
// Create a new instance of PHP's DOMDocument class.
$doc = new DOMDocument();
// Use file_get_contents() to download the page, pass the output of file_get_contents()
// to PHP's DOMDocument class.
@$doc->loadHTML(@file_get_contents($url, false, $context));
// Create an array of all of the title tags.
$title = $doc->getElementsByTagName("title");
// There should only be one <title> on each page, so our array should have only 1 element.
$title = $title->item(0)->nodeValue;
// Give $description and $keywords no value initially. We do this to prevent errors.
$description = "";
$keywords = "";
// Create an array of all of the pages <meta> tags. There will probably be lots of these.
$metas = $doc->getElementsByTagName("meta");
// Loop through all of the <meta> tags we find.
for ($i = 0; $i < $metas->length; $i++) {
$meta = $metas->item($i);
// Get the description and the keywords.
if (strtolower($meta->getAttribute("name")) == "description")
$description = $meta->getAttribute("content");
if (strtolower($meta->getAttribute("name")) == "keywords")
$keywords = $meta->getAttribute("content");
}
// Return our JSON string containing the title, description, keywords and URL.
return '{ "Title": "'.str_replace("\n", "", $title).'", "Description": "'.str_replace("\n", "", $description).'", "Keywords": "'.str_replace("\n", "", $keywords).'", "URL": "'.$url.'"},';
}
function follow_links($url) {
// Give our function access to our crawl arrays.
global $already_crawled;
global $crawling;
// The array that we pass to stream_context_create() to modify our User Agent.
$options = array('http'=>array('method'=>"GET", 'headers'=>"User-Agent: Chegspider/0.1\n"));
// Create the stream context.
$context = stream_context_create($options);
// Create a new instance of PHP's DOMDocument class.
$doc = new DOMDocument();
// Use file_get_contents() to download the page, pass the output of file_get_contents()
// to PHP's DOMDocument class.
@$doc->loadHTML(@file_get_contents($url, false, $context));
// Create an array of all of the links we find on the page.
$linklist = $doc->getElementsByTagName("a");
// Loop through all of the links we find.
foreach ($linklist as $link) {
$l = $link->getAttribute("href");
// Process all of the links we find. This is covered in part 2 and part 3 of the video series.
if (substr($l, 0, 1) == "/" && substr($l, 0, 2) != "//") {
$l = parse_url($url)["scheme"]."://".parse_url($url)["host"].$l;
} else if (substr($l, 0, 2) == "//") {
$l = parse_url($url)["scheme"].":".$l;
} else if (substr($l, 0, 2) == "./") {
$l = parse_url($url)["scheme"]."://".parse_url($url)["host"].dirname(parse_url($url)["path"]).substr($l, 1);
} else if (substr($l, 0, 1) == "#") {
$l = parse_url($url)["scheme"]."://".parse_url($url)["host"].parse_url($url)["path"].$l;
} else if (substr($l, 0, 3) == "../") {
$l = parse_url($url)["scheme"]."://".parse_url($url)["host"]."/".$l;
} else if (substr($l, 0, 11) == "javascript:") {
continue;
} else if (substr($l, 0, 5) != "https" && substr($l, 0, 4) != "http") {
$l = parse_url($url)["scheme"]."://".parse_url($url)["host"]."/".$l;
}
// If the link isn't already in our crawl array add it, otherwise ignore it.
if (!in_array($l, $already_crawled)) {
$already_crawled[] = $l;
$crawling[] = $l;
// Output the page title, descriptions, keywords and URL. This output is
// piped off to an external file using the command line.
echo get_details($l)."\n";
}
}
// Remove an item from the array after we have crawled it.
// This prevents infinitely crawling the same page.
array_shift($crawling);
// Follow each link in the crawling array.
foreach ($crawling as $site) {
follow_links($site);
}
}
// Begin the crawling process by crawling the starting link first.
follow_links($start);Bonjour et merci pour votre assistance.
Je préfère bien l'option de base "[b]Usage Basic[/b]" car me permettra de comparer chacun des [b]title[/b] entre eux, des [b]keywords[/b] entre eux, des [b]Descriptions[/b] entre elles et des [b]Urls[/b] aussi entre eux en fonction des [b]titles[/b] et [b]description[/b] bien sûr .
Mais encore une fois, je ne sais pas comment m'y prendre sachant que mes données sont stockés chacun dans des variables: [b]$titles[/b], [b]$description[/b], [b]$keywords[/b] et [b]$url[/b].
Voici le Code complet de mon scraper:
[code]// This is our starting point. Change this to whatever URL you want.
$start = "";
// Our 2 global arrays containing our links to be crawled.
$already_crawled = array();
$crawling = array();
function get_details($url) {
// The array that we pass to stream_context_create() to modify our User Agent.
$options = array('http'=>array('method'=>"GET", 'headers'=>"User-Agent: Chegspider/0.1\n"));
// Create the stream context.
$context = stream_context_create($options);
// Create a new instance of PHP's DOMDocument class.
$doc = new DOMDocument();
// Use file_get_contents() to download the page, pass the output of file_get_contents()
// to PHP's DOMDocument class.
@$doc->loadHTML(@file_get_contents($url, false, $context));
// Create an array of all of the title tags.
$title = $doc->getElementsByTagName("title");
// There should only be one <title> on each page, so our array should have only 1 element.
$title = $title->item(0)->nodeValue;
// Give $description and $keywords no value initially. We do this to prevent errors.
$description = "";
$keywords = "";
// Create an array of all of the pages <meta> tags. There will probably be lots of these.
$metas = $doc->getElementsByTagName("meta");
// Loop through all of the <meta> tags we find.
for ($i = 0; $i < $metas->length; $i++) {
$meta = $metas->item($i);
// Get the description and the keywords.
if (strtolower($meta->getAttribute("name")) == "description")
$description = $meta->getAttribute("content");
if (strtolower($meta->getAttribute("name")) == "keywords")
$keywords = $meta->getAttribute("content");
}
// Return our JSON string containing the title, description, keywords and URL.
return '{ "Title": "'.str_replace("\n", "", $title).'", "Description": "'.str_replace("\n", "", $description).'", "Keywords": "'.str_replace("\n", "", $keywords).'", "URL": "'.$url.'"},';
}
function follow_links($url) {
// Give our function access to our crawl arrays.
global $already_crawled;
global $crawling;
// The array that we pass to stream_context_create() to modify our User Agent.
$options = array('http'=>array('method'=>"GET", 'headers'=>"User-Agent: Chegspider/0.1\n"));
// Create the stream context.
$context = stream_context_create($options);
// Create a new instance of PHP's DOMDocument class.
$doc = new DOMDocument();
// Use file_get_contents() to download the page, pass the output of file_get_contents()
// to PHP's DOMDocument class.
@$doc->loadHTML(@file_get_contents($url, false, $context));
// Create an array of all of the links we find on the page.
$linklist = $doc->getElementsByTagName("a");
// Loop through all of the links we find.
foreach ($linklist as $link) {
$l = $link->getAttribute("href");
// Process all of the links we find. This is covered in part 2 and part 3 of the video series.
if (substr($l, 0, 1) == "/" && substr($l, 0, 2) != "//") {
$l = parse_url($url)["scheme"]."://".parse_url($url)["host"].$l;
} else if (substr($l, 0, 2) == "//") {
$l = parse_url($url)["scheme"].":".$l;
} else if (substr($l, 0, 2) == "./") {
$l = parse_url($url)["scheme"]."://".parse_url($url)["host"].dirname(parse_url($url)["path"]).substr($l, 1);
} else if (substr($l, 0, 1) == "#") {
$l = parse_url($url)["scheme"]."://".parse_url($url)["host"].parse_url($url)["path"].$l;
} else if (substr($l, 0, 3) == "../") {
$l = parse_url($url)["scheme"]."://".parse_url($url)["host"]."/".$l;
} else if (substr($l, 0, 11) == "javascript:") {
continue;
} else if (substr($l, 0, 5) != "https" && substr($l, 0, 4) != "http") {
$l = parse_url($url)["scheme"]."://".parse_url($url)["host"]."/".$l;
}
// If the link isn't already in our crawl array add it, otherwise ignore it.
if (!in_array($l, $already_crawled)) {
$already_crawled[] = $l;
$crawling[] = $l;
// Output the page title, descriptions, keywords and URL. This output is
// piped off to an external file using the command line.
echo get_details($l)."\n";
}
}
// Remove an item from the array after we have crawled it.
// This prevents infinitely crawling the same page.
array_shift($crawling);
// Follow each link in the crawling array.
foreach ($crawling as $site) {
follow_links($site);
}
}
// Begin the crawling process by crawling the starting link first.
follow_links($start);[/code]
