问题
How can I get the fragment (value after hash \'#\') from a URL in php?
Say from http://domain.com/site/gallery/1#photo45 I want photo45
回答1:
If you want to get the value after the hash mark or anchor as shown in a user's browser: This isn't possible with "standard" HTTP as this value is never sent to the server (hence it won't be available in $_SERVER["REQUEST_URI"] or similar predefined variables). You would need some sort of JavaScript magic on the client side, e.g. to include this value as a POST parameter.
If it's only about parsing a known URL from whatever source, the answer by mck89 is perfectly fine though.
回答2:
That part is called "fragment" and you can get it in this way:
$url=parse_url("http://domain.com/site/gallery/1#photo45 ");
echo $url["fragment"]; //This variable contains the fragment
回答3:
A) already have url with #hash in PHP? Easy! Just parse it out !
if( strpos( $url, "#" ) === false ) echo "NO HASH !";
else echo "HASH IS: #".explode( "#", $url )[1]; // arrays are indexed from 0
Or in "old" PHP you must pre-store the exploded to access the array:
$exploded_url = explode( "#", $url ); $exploded_url[1];
B) You want to get a #hash by sending a form to PHP?
=> Use some JavaScript MAGIC! (To pre-process the form)
var forms = document.getElementsByTagName('form'); //get all forms on the site
for(var i=0; i<forms.length;i++) forms[i].addEventListener('submit', //to each form...
function(){ //add a submit pre-processing function that will:
var hidden = document.createElement("input"); //create an extra input element
hidden.setAttribute('type','hidden'); //set it to hidden so it doesn't break view
hidden.setAttribute('name','fragment'); //set a name to get by it in PHP
hidden.setAttribute('value',window.location.hash); //set a value of #HASH
this.appendChild(hidden); //append it to the current form
});
Depending on your form's method attribute you get this hash in PHP by:
$_GET['fragment'] or $_POST['fragment']
Possible returns: 1. ""[empty string] (no hash) 2. whole hash INCLUDING the #[hash] sign (because we've used the window.location.hash in JavaScript which just works that way :) )
C) You want to get the #hash in PHP JUST from requested URL?
YOU CAN'T !
...(not while considering regular HTTP requests)...
...Hope this helped :)
回答4:
I've been searching for a workaround for this for a bit - and the only thing I have found is to use URL rewrites to read the "anchor". I found in the apache docs here http://httpd.apache.org/docs/2.2/rewrite/advanced.html the following...
By default, redirecting to an HTML anchor doesn't work, because mod_rewrite escapes the # character, turning it into %23. This, in turn, breaks the redirection.
Solution: Use the [NE] flag on the RewriteRule. NE stands for No Escape.
Discussion: This technique will of course also work with other special characters that mod_rewrite, by default, URL-encodes.
It may have other caveats and what not ... but I think that at least doing something with the # on the server is possible.
回答5:
You can't get the text after the hash mark. It is not sent to the server in a request.
回答6:
I found this trick, if u insist want the value with php.. split the anchor (#) value and get it with javascript, then store as cookie, after that get the cookie value with php~
http://www.stoimen.com/blog/2009/04/15/read-the-anchor-part-of-the-url-with-php/
回答7:
You need to parse the url first, so it goes like this:
$url = "https://www.example.com/profile#picture";
$fragment = parse_url($url,PHP_URL_FRAGMENT); //this variable holds the value - 'picture'
If you need to parse the actual url of the current browser, you need to request to call the server.
$url = $_SERVER["REQUEST_URI"];
$fragment = parse_url($url,PHP_URL_FRAGMENT); //this variable holds the value - 'picture'
回答8:
If you are wanting to dynamically grab the hash from URL, this should work: https://stackoverflow.com/a/57368072/2062851
<script>
var hash = window.location.hash, //get the hash from url
cleanhash = hash.replace("#", ""); //remove the #
//alert(cleanhash);
</script>
<?php
$hash = "<script>document.writeln(cleanhash);</script>";
echo $hash;
?>
回答9:
You could do a string replace on the client side then the server side. Not a particularly robust solution but if you wan't a quick solution like me it will suffice I think.
Client:
var tempString = stringVal.replace('#', 'hashtag');
Server:
$user_message = $_GET['userMessage'];
$user_message = str_replace("hashtag", "#", $user_message);
回答10:
You can do it by a combination of javascript and php:
<div id="cont"></div>
And by the other side;
<script>
var h = window.location.hash;
var h1 = (win.substr(1));//string with no #
var q1 = '<input type="text" id="hash" name="hash" value="'+h1+'">';
setInterval(function(){
if(win1!="")
{
document.querySelector('#cont').innerHTML = q1;
} else alert("Something went wrong")
},1000);
</script>
Then, on form submit you can retrieve the value via $_POST['hash'] (set the form)
回答11:
Getting the data after the hashmark in a query string is simple. Here is an example used for when a client accesses a glossary of terms from a book. It takes the name anchor delivered (#tesla), and delivers the client to that term and highlights the term and its description in blue so its easy to see.
A. setup your strings with a div id, so the name anchor goes where its supposed to and the javascript can change the text colors
<div id="tesla">Tesla</div>
<div id="tesla1">An energy company</div>
B. Use Javascript to do the heavy work, on the server side, inserted in your PHP page, or wherever..
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
C. I am launching the java function automatically when the page is loaded.
<script>
$( document ).ready(function() {
D. get the anchor (#tesla) from the url received by the server
var myhash1 = $(location).attr('hash'); //myhash1 == #tesla
E. trim the hash sign off of it
myhash1 = myhash1.substr(1) //myhash1 == tesla
F. I need to highlight the term and the description so i create a new var
var myhash2 = '1';
myhash2 = myhash1.concat(myhash2); //myhash2 == tesla1
G. Now I can manipulate the text color for the term and description
var elem = document.getElementById(myhash1);
elem.style.color = 'blue';
elem = document.getElementById(myhash2);
elem.style.color = 'blue';
});
</script>
H. This works. client clicks link on client side (xyz.com#tesla) and goes right to the term. the term and the description are highlighted in blue by javascript for quick reading .. all other entries left in black..
来源：https://stackoverflow.com/questions/2317508/get-fragment-value-after-hash-from-a-url-in-php