How to get page title in php? - php

I have this function to get title of a website:
function getTitle($Url){
$str = file_get_contents($Url);
if(strlen($str)>0){
preg_match("/\<title\>(.*)\<\/title\>/",$str,$title);
return $title[1];
}
}
However, this function make my page took too much time to response. Someone tell me to get title by request header of the website only, which won't read the whole file, but I don't know how. Can anyone please tell me which code and function i should use to do this? Thank you very much.

Using regex is not a good idea for HTML, use the DOM Parser instead
$html = new simple_html_dom();
$html->load_file('****'); //put url or filename
$title = $html->find('title');
echo $title->plaintext;
or
// Create DOM from URL or file
$html = file_get_html('*****');
// Find all images
foreach($html->find('title') as $element)
echo $element->src . '<br>';
Good read
RegEx match open tags except XHTML self-contained tags

Use jQuery Instead to get Title of your page
$(document).ready(function() {
alert($("title").text());
});​
Demo : http://jsfiddle.net/WQNT8/1/

try this will work surely
include_once 'simple_html_dom.php';
$oHtml = str_get_html($url);
$Title = array_shift($oHtml->find('title'))->innertext;
$Description = array_shift($oHtml->find("meta[name='description']"))->content;
$keywords = array_shift($oHtml->find("meta[name='keywords']"))->content;
echo $title;
echo $Description;
echo $keywords;

Related

PHP echo content from <tags>

I've searched around and around and I'm not sure how this really works.
I have the tags
<taghere>content</taghere>
and i want to pull the "content" so i can put an ifstatement depending on what the "content" is as the "content" is varrying depending on the page
i.e
<taghere>HelloWorld</taghere>
$content = //function that returns the text between <taghere> and </taghere>
if($content == "HelloWorld")
{
//execute function;
}
else if($content =="Bonjour")
{
//execute seperate function
}
i tried using preg but it doesnt seem to work and just returns whatever value is in the lines field instead of actually giving me the information within the tags
If I understand your question correctly, you want the data INSIDE the tag "taghere".
If you are parsing HTML, you should use DOMDocument
Try something similar to this:
<?php
// Assuming your content (the html where those tags are found) is available as $html
$doc = new DOMDocument();
libxml_use_internal_errors(true);
$doc->loadHTML($html); // loads your HTML
libxml_clear_errors();
// Note: Tag names are case sensitive
$text = $dom->getElementsByTagName('taghere');
// Echo the content
echo $text
you can use DomDocument and loadXML to do this
<?php
function doAction($word=""){
$html="<taghere>$word</taghere>";
$doc = new DOMDocument();
$doc->loadXML($html);
//discard white space
$hTwo= $doc->getElementsByTagName('taghere'); // here u use your desired tag
if($hTwo->item(0)->nodeValue== "HelloWorld")
{
echo "1";
}
else if($hTwo->item(0)->nodeValue== "Bonjour")
{
echo "2";
//execute seperate function
}
}
doAction($word="Bonjour");
You cannot do it like that. Technically it is possible but it's more than an overkill. And you mixed up PHP with HTML in a way that doesn't work.
To achieve the thing that you want you have to do something like this:
$content = 'something';
if ($comtent === 'something') {
//do something
}
if ($content === 'something else') {
//do something else
}
echo '<tag>'. $content . '</tag>' ;
Of course you can change $content in the ifs.
Dont forget, you can allways add an ID into a tag so you can reference it with java script.
<tag id='tagid'>blah blah blah </tag>
<script>
document.getElementById(tagid)
</script>
This might be a much simpler way to get what you are thinking about then some of the other responses
I don't know what regex you tried and therefor not what would have been wrong. Might have been the escaping of the <
<?php
if(preg_match('#\<taghere>(.*)\</taghere>#', $document, $a)){
$content = $a[1];
}
?>
I suppose there will be only one

PHP Simple HTML DOM Scrape External URL

I'm trying to build a personal project of mine, however I'm a bit stuck when using the Simple HTML DOM class.
What I'd like to do is scrape a website and retrieve all the content, and it's inner html, that matches a certain class.
My code so far is:
<?php
error_reporting(E_ALL);
include_once("simple_html_dom.php");
//use curl to get html content
$url = 'http://www.peopleperhour.com/freelance-seo-jobs';
$html = file_get_html($url);
//Get all data inside the <div class="item-list">
foreach($html->find('div[class=item-list]') as $div) {
//get all div's inside "item-list"
foreach($div->find('div') as $d) {
//get the inner HTML
$data = $d->outertext;
}
}
print_r($data)
echo "END";
?>
All I get with this is a blank page with "END", nothing else outputted at all.
It seems your $data variable is being assigned a different value on each iteration. Try this instead:
$data = "";
foreach($html->find('div[class=item-list]') as $div) {
//get all divs inside "item-list"
foreach($div->find('div') as $d) {
//get the inner HTML
$data .= $d->outertext;
}
}
print_r($data)
I hope that helps.
I think, you may want something like this
$url = 'http://www.peopleperhour.com/freelance-seo-jobs';
$html = file_get_html($url);
foreach ($html->find('div.item-list div.item') as $div) {
echo $div . '<br />';
};
This will give you something like this (if you add the proper style sheet, it'll be displayed nicely)

Regex Replacement Dependent On Class

I have the following code that replaces all tags on a page and adds the nCode image resizer to it. The code is as follows:
function ncode_the_content($content) {
return preg_replace("/<img([^`|>]*)>/im", "<img onload=\"NcodeImageResizer.createOn(this);\"$1>", $content); }
}
What I need to do is make it so that if an image has the class of "noresize" it doesn't do the preg_match.
I have only managed to get it so that if there is the "noresize" class anywhere on the page it stops resizing all images instead of just the one with the correct class.
Any suggestions?
UPDATE:
Am I even remotely in the right ballpark with this?
function ncode_the_content($content) {
//Load the HTML page
$html = file_get_contents($content);
//Parse it. Here we use loadHTML as a static method
//to parse the HTML and create the DOM object in one go.
#$dom = DOMDocument::loadHTML($html);
//Init the XPath object
$xpath = new DOMXpath($dom);
//Query the DOM
$linksnoresize = $xpath->query( 'img[#class = "noresize"]' );
$links = $xpath->query( 'img[]' );
//Display the results as in the previous example
foreach($links as $link){
echo $link->getAttribute('onload'), 'NcodeImageResizer.createOn(this);';
}
foreach($linksnoresize as $link){
echo $link->getAttribute('onload'), '';
}
}
Here's some untested code:
$dom = DOMDocument::loadHTML($content);
$images = $dom->getElementsByTagName("img");
foreach ($images as $image) {
if (!strstr($image->getAttribute("class"), "noresize")) {
$image->setAttribute("onload", "NcodeImageResizer.createOn(this);");
}
}
But, if it were me, I would eschew any such inline event handler and instead just find the appropriate elements with Javascript.
I ended up just using pure CSS and adding a around the images I didn't want to be resized. Forced the width and height of that div back to auto and then removed the warning message that was displayed above them. Seems to work fine. Thanks for your help :)

PHP regex in simple_html_dom library

I was trying to scrape imdb by following code.
$url = "http://www.imdb.com/search/title?languages=en|1&explore=year";
$html = new simple_html_dom();
$html->load(str_replace(' ','',$data = get_data($url)));
foreach($html->find('#left') as $total_movies)
{
$content = $total_movies->plaintext;
if(preg_match("/(?<total>[0-9,]+) titles/",$content,$matches))
{
print_r($matches);
}
echo $content."<br>";
}
get_data() is just a curl function i created.
The problem is that preg_match is not working. i don't know why but the same thing when used work here. $content contains the text what i scrape in above code.
$content = "1-50 of 101 titles.";
if(preg_match("/(?<total>[0-9,]+) titles/",$content,$matches))
print_r($matches);
The source on the site is actually:
<div id="left">
1-50 of 564,592
titles.
</div>
notice the \n this would need stripping out or added to your condition.
Heres a method to reach your goal without using any added extra library.
<?php
$url = "http://www.imdb.com/search/title?languages=en|1&explore=year";
$temp=file_get_contents($url);
$xml = new DOMDocument();
#$xml->loadHTML($temp);
foreach($xml->getElementsByTagName('div') as $div) {
if($div->getAttribute('id')=='left'){
preg_match("#of ([0-9,]+)#",$div->nodeValue,$match);
$matchs[]=preg_replace('/[^0-9]/', '', $match[0]);
}
}
echo number_format($matchs[0]); //564,592
?>

PHP Explode: How to Download and Split a Specific HTML Part?

example: at this domain http://www.example.com/234234/go.html is only one iframe-code
how can i get the url in the iframe-code?
go.html:
<iframe style="width: 99%;height:80%;margin:0 auto;border:1px solid grey;" src="i want this url" scrolling="auto" id="iframe_content"></iframe>
i have this snippet, but its very bad coded..
function downloadlink ($d_id)
{
$res = #get_url ('' . 'http://www.example.com/' . $d_id . '/go.html');
$re = explode ('<iframe', $res);
$re = explode ('src="', $re[1]);
$re = explode ('"', $re[1]);
$url = $re[0];
return $url;
}
thank you!
Use a html parser such as simple_html_dom to parse html.
$html = file_get_html('http://www.example.com/');
// Find all iframes
foreach($html->find('iframe') as $element)
echo $element->src . '<br>';
I don't know what scope you have here - is it just that snippet, or are you browsing whole pages?
If you're browsing whole pages, you could use the PHP Simple HTML DOM Parser.
A slightly modified example from their site:
// Create DOM from URL or file
$html = file_get_html('http://www.google.com/');
// Find all iframes
foreach($html->find('iframe') as $element)
echo $element->style . '<br>';
This sample code goes through all iframes on the page, and outputs their src property.
PHP has built-in functions for this as well (like SimpleXML), but I find the DOM Parser very nice and easy to handle (as you can see).

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