I have following script, which is not working. What to I do to add the link?
jno = "97856483";
dispTitle = "new book";
dispAuthor = "authorname";
document.getElementById('popups').innerHTML = '';
//Add link to add this book:
var url = encodeURIComponent(jno) + "&tt=" + encodeURIComponent(dispTitle) + "&at=" + encodeURIComponent(dispAuthor);
//document.writeln(url);
document.getElementById("addLink").innerHTML = "<a href='memaccountentry.php?isbn='+ url>Add book</a>" ; //This one just appends the word url.
//window.location.href = 'memaccountentry.php?isbn=' +jno +'&tt=' +dispTitle+'&at=' +dispAuthor; //I know this is working, but not a right way to do.
//I need to put a href link to go to the next page.
//ajax.open('GET', 'memaccountentry.php?isbn=' +jno +'&tt=' +dispTitle+'&at=' +dispAuthor', true);
You need to properly open and close your quotes.
Try that:
document.getElementById("addLink").innerHTML = "<a href='memaccountentry.php?isbn="+ url +"'>Add book</a>" ; //This one just appends the word url.
It looks like you didn't format your string correctly.
If this is not what you wanted, then you have me completely confused.
document.getElementById("addLink").innerHTML = "Add book";
Related
I need to display title from referring URL and here is the code I'm using to achieve that:
<?php
if (isset($_SERVER['HTTP_REFERER'])) {
$url_to_load = $_SERVER['HTTP_REFERER'];
$f = file_get_contents($url_to_load);
$p1 = strpos($f, "<title>");//position start
$qe = substr($f, $p1);//string from start position
$p2 = strpos($qe, "</title>");//position end
$query = substr($qe, 7, $p2-2);//cuts from start position +7 (<title>) untill end position -2...
echo $query;}
else{
$ref_url = 'No Reffering URL'; // show failure message
}//end else no referer set
echo "$ref_url";
?>
When i visit page with this code from URL that has the following code:
<title>Title Of Referrer</title>
Code works, but there is still the piece of the closing tag and when i check source code this is what i'll get:
Title Of Referrer</tit
What i need to change to remove the closing tag completely?
$query = substr($qe, 7, $p2-7);//cuts from start position +7 (<title>) untill end position -2...
You only subtract 2 at the end on end title but you add 7 on start title.
Try the code above and see if that works
EDIT:
Another solution is to do like this.
$query = strip_tags(substr($qe, 0, $p2));
This saves all of the title tags but then delete them with strip_tags()
EDIT2:
There are some other things in the code I would suggest.
$f = file_get_contents($url_to_load);
$query = strip_tags(substr($f, strpos($f, "<title>"), strpos($f, "</title>")));
This code brings it down to two lines of code and uses fewer variables. You can also get ridd of $f, but it may be useful to something else and it's only one variable.
I have a small time url shortner at http://thetpg.tk using a simple php script and MySQL.
What it does is to get the id and matches it in the SQL Database and redirects it to the specified link found in the Database using header().
But if I have a frameset with source as something like http://thetpg.tk redirected link is loaded inside the frame instead of the parent window.
For e.g. look at the page source of
http://thetpgmusic.tk which has the frame source as
http://thetpg.tk/b which further redirects to
http://thepirategamer.tk/music.php .
I want (1) to load (3) as the parent, but just by making changes in the functions in (2) .
So is there a function like
header(Location:http://thepirategamer.tk/music.php, '_parent');
in php, or is there any other way to implement it?
NOTE: I can't change anything in (2).
Thanks in advance ! :)
There are tree solutions that can help you do this:
First solution:
This solution may involve php if you're using echo to generate your html code, when you need to output an a tag, you should make sure to add the atribute target='_parent'
<?php
echo ' Click here ';
?>
problem :
The problem with this solution, is that it doesn't work if you need to redirect in the parent window from a page that you don't own (inside the iframe). The second solution solves this problem
Second solution:
This second solution is totally client-side, wich means you need to use some javascript. you should define a javascript function that addes the target='_parent' in every a tag
function init ()
{
TagNames = document.getElementById('iframe').contentWindow.document.getElementsByTagName('a');
for( var x=0; x < TagNames.length; x++ )
TagNames[x].onclick = function()
{
this.setAttribute('target','_parent');
}
};
Now all you need to do is to call this function when the body is loaded like this
<body onload="init();"> ... </body>
problem:
The problem with this solution, is that if you have a link that contains an anchor like this href="#" it will change the parent window to the child window To solve this problem, you have to use the third solution
Third solution:
This solution is also client-side and you have to use javascript. It is like the second solution except that you have to test if the link is a url to an external page or to an anchor before you redirect. so you need to define a function that returns true if it's a link to an external page and false if it's a simple anchor, and then you'll have to use this function like this
function init ()
{
TagNames = document.getElementById('iframe').contentWindow.document.getElementsByTagName('a');
for( var x=0; x < TagNames.length; x++ )
TagNames[x].onclick = function()
{
if ( is_external_url( this.href ) )
document.location = this.href;
}
};
and you also need to call this function when the body is loaded
<body onload="init();"> ... </body>
don't forget to define is_external_url()
update :
Here is the solution to get the url of the last child, it's just a simple function that looks from frames and iframes inside the paages and get the urls
function get_last_url($url)
{
$code = file_get_contents($url);
$start = strpos($code, '<frameset');
$end = strpos($code, '</frameset>');
if($start===false||$end===false)
{
$start = strpos($code, '<iframe');
$end = strpos($code, '</iframe>');
if($start===false||$end===false)
return $url;
}
$sub = substr($code, $start,$end-$start);
$sub = substr($sub, strpos($sub,'src="')+5);
$url = explode('"', $sub)[0];
return get_last_child($url);
}
$url = get_last_url("http://thetpgmusic.tk/");
header('Location: ' . $url);
exit();
I am building an online spanish dictionary. I obtain the definitions legally from another site. For specific words the user may search for, a list of suggestions comes up.
If you click on any of those suggested words, error page pops up: http://verbum.xtrweb.com/verbumpost.php?word=boedo&word0=hola . How can I make those listed words run through the code pasted below: (1) retrieve definition (2) change style.
I know that a unique URL exists for every one of those suggested words (inspect element). If you paste together that code with the original site's URL parameters, you get what I need.:
"http://lema.rae.es/drae/srv/search?id=AVNYdnea1DXX2EH9E2mb"
up to "srv/" belongs to site
the rest is from the specific word (in this case, the first suggested, "bordar"
The Process:
<?php
$words = array('word','word0','word1','word2','word3','word4','word5','word6','word7','word7','word9',
'word10','word11','word12',
'word13','word14','word15');
function url_decode($string){
return urldecode(utf8_decode($string));
}
// we'll use this later on for loading the files.
$baseUrl = 'http://lema.rae.es/drae/srv/search?val=';
// string to replace in the head.
$cssReplace = <<<EOT
<style type="text/css">
//blabla
</style>
</head>
EOT;
// string to remove in the document.
$spanRemove = '<span class="f"><b>.</b></span>';
$styleRemove =
// use for printing out the result ID.
$resultIndex = 0;
// loop through the words we defined above
// load the respective file, and print it out.
foreach($words as $word) {
// check if the request with
// the given word exists. If not,
// continue to the next word
if(!isset($_REQUEST[$word]))
continue;
// load the contents of the base url and requested word.
$contents = file_get_contents($baseUrl . urldecode(utf8_decode($_REQUEST[$word])));
// replace the data defined above.
$contents = str_replace('</head>', $cssReplace, $contents);
$contents = str_replace($spanRemove,"", $contents);
$data = preg_replace('/(search?[\d\w]+)/','http://lema.rae.es/drae/srv/\1', $data);
// print out the result with the result index.
// ++$resultIndex simply returns the value of
// $resultIndex after adding one to it.
echo "<div id='results' style='
//bla bla
}
?>
I don't think I understand your question, but I do see that you are calling preg_replace on an uninitialized variable - $data.
Maybe you want this instead?
$data = preg_replace('/(search?[\d\w]+)/','http://lema.rae.es/drae/srv/\1', $contents);
Like I said, I don't fully understand your question, but I do see that as a potential problem.
EDIT:
From your comment, it looks like you want to append the href of the link being clicked to a base url and request that page's data. Can you use jQuery? Like this:
var baseUrl = "http://lema.rae.es/drae/srv/"; // base url
//click function that binds to all anchors within a list item within a ul. in order
//to get more precise, you may need to add some classes or ids
$('ul li a').click(function(){
var src = $(this).prop('href'); //this grabs the href property of the anchor
$(this).find('span').css('propery', 'change to this'); //change css property of span child of this anchor
//or if you want to add a class with styles to the element
$(this).find('span').addClass('class name');
//ajax request to get page data
$.ajax({
type: 'POST',
url: baseUrl+src //appending the query to the base url
}).done(function(data){
//append the returned html to a div, or any element you desire
$('#myelement').append(data);
});
});
Hope this helps. If you need any help with jQuery just let me know.
I am writing a simple php crawler that gets data from a website and inserts it into my database. I start with a predefined url. Then I go through the the contents of the page (from php's file_get_contents) and eventually use file_get_contents on links of that page. The url's I am getting from the links are fine when I echo them and then open them from my browser on their own. However, when I use file_get_contents and then echo the result, the page does not appear correctly because of errors related to dynamically created server-side data from the site. The echo'd page contents do not include the listed data from the server that I need, because it cannot find necessary resources for the site.
It appears relative paths in the echo'd webpage are not allowing the desired content to be generated.
Can anyone point me in the right direction here?
Any help is appreciated!
Here is some of my code so far:
function crawl_all($url)
{
$main_page = file_get_contents($url);
while(strpos($main_page, '"fl"') > 0)
{
$subj_start = strpos($main_page, '"fl"'); // get start of subject row
$main_page = substr($main_page, $subj_start); // cut off everything before subject row
$link_start = strpos($main_page, 'href') + 6; // get the start of the subject link
$main_page = substr($main_page, $link_start); // cut off everything before subject link
$link_end = strpos($main_page, '">') - 1; // get the end of the subject link
$link_length = $link_end + 1;
$link = substr($main_page, 0, $link_length); // get the subject link
crawl_courses('https://whatever.com' . $link);
}
}
/* Crawls all the courses for a subject. */
function crawl_courses($url)
{
$subj_page = file_get_contents($url);
echo $url; // website looks fine when in opened in browser
echo $subj_page; // when echo'd, the page does not contain most of the server-side generated data i need
while(strpos($subj_page, '<td><a href') > 0)
{
$course_start = strpos($subj_page, '<td><a href');
$subj_page = substr($subj_page, $course_start);
$link_start = strpos($subj_page, 'href') + 6;
$subj_page = substr($subj_page, $link_start);
$link_end = strpos($subj_page, '">') - 1;
$link_length = $link_end + 1;
$link = substr($subj_page, 0, $link_length);
//crawl_professors('https://whatever.com' . $link);
}
}
Try advance html dom parser. It is here....
http://sourceforge.net/projects/advancedhtmldom/
i need help in parsing a href attribute of a single anchore tag and then changing its value in a php file using "simple html dom" library.
Below is the html code:-
<li id="toggle"> <a id="open" class="open" href="#" style="display: block; "></a></li>
Now i want to get this specific href value and change it to some page like say, Logout.php depending upon if the user is logged in or not.
And here is my php code:
<?php
include 'simple_html_dom.php';
session_start();
$html = new simple_html_dom();
$html->load_file('index1.php');
if(!isset($_SESSION['username'])){
$ret = $html->find('li[id=hello]');
$ret = "Hello Guest";
$tog = $html->find('li[id=toggle]');
$tog = "Log In | Register";
}else{
$user = $_SESSION['username'];
$ret = "Hello " . $user;
$tog = "Log out";
$hrf = $html->find('a[id=open]');
$hrf->href = 'Logout.php';
}
?>
Now except finding and changing the "href" value, all other things are working properly.
Any help is welcomed. Thanks in advance.
Now i was able to solve the problem. i think both of we overlooked the fact that it was returning an array. So this is what i did to solve. May it help some one else also.
$e = $html->find('a[id=open]'); // returns an array containing all the info for anchor a
$link = $e[0]->href; //the value of attribute href of anchor a which was the first element in array
$e[0]->href = 'Logout.php'; // get the new value
$link = $e[0]->href; // assign the value to a variable
You can find it all in the Manual
$tog = $html->find('li[id=toggle]');
$tog->innertext = "Log In | Register";
when you echo the content. the item will have the new value
UPDATE
You can get the href this way:
EDIT:
//$hrf = $html->find('a[id=open]');
$hrf = $html->find('#open'); // this makes more sense since it has an ID
$oldlink = $hrf->href; // this will retrieve the href value;
$hrf->href = 'Logout.php'; // new link