Question

hello I have the following tags :

/* Youtube Live Embed
 * Copyright (C) 2015  Jerod Lycett
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

window.onload = embed;
function embed() {
    var apikey = "SANITIZED"; //Set to your API Key
    var channelID = "UC_aSKWQBRMoN2wry2Mh3jvg"; //Set to your channel ID. If you don't know it visit https://www.googleapis.com/youtube/v3/channels?part=id&forUsername=CHANNELNAME&fields=items%2Fid&key=APIKEY with your name and key.
    var video;
    checkLive(channelID,apikey,function() {
        video = this;
        if(video.length == 0) {
            archiveVideo(channelID,apikey,function() {
                video = this;
                var embedCode = "<object height=\"350\" width=\"425\"><param name=\"movie\" value=\"https://www.youtube.com/v/" + video + "&autoplay=0\"><embed height=\"350\" width=\"425\" type=\"application/x-shockwave-flash\" src=\"https://www.youtube.com/v/" + video + "&autoplay=0\"></embed></object>";
                document.getElementById("liveembed").innerHTML = embedCode;
            });
        }
        else {
            var embedCode = "<object height=\"350\" width=\"425\"><param name=\"movie\" value=\"https://www.youtube.com/v/" + video + "&autoplay=1\"><embed height=\"350\" width=\"425\" type=\"application/x-shockwave-flash\" src=\"https://www.youtube.com/v/" + video + "&autoplay=1\"></embed></object>";
            document.getElementById("liveembed").innerHTML = embedCode;
        }
    });
}
function checkLive(channelID,apikey,callback) {
    // In future check if soon live and refresh until live
    var getLive = new XMLHttpRequest();
    getLive.onreadystatechange = function() {
        if(getLive.readyState === 4) {
            var liveVideo = JSON.parse(getLive.responseText);
            if(liveVideo.items[0] === undefined) {
                callback.call("");
            }
            else {
                callback.call(liveVideo.items[0].id.videoId);
            }
        }
    }
    getLive.open("GET","https://www.googleapis.com/youtube/v3/search?part=id&channelId=" + channelID + "&eventType=live&maxResults=1&type=video&fields=items%2Fid&key=" + apikey,true);
    getLive.send();
}
function archiveVideo(channelID,apikey,callback) {
    var getPlaylist = new XMLHttpRequest();
    getPlaylist.onreadystatechange = function() {
        if(getPlaylist.readyState === 4) {
            var playlistObj = JSON.parse(getPlaylist.responseText);
            var playlistID = playlistObj.items[0].contentDetails.relatedPlaylists.uploads;
            var getArchiveVideo = new XMLHttpRequest();
            getArchiveVideo.onreadystatechange = function() {
                if(getArchiveVideo.readyState === 4) {
                    var archiveVideoObj = JSON.parse(getArchiveVideo.responseText);
                    callback.call(archiveVideoObj.items[0].contentDetails.videoId);
                }
            }
            getArchiveVideo.open("GET","https://www.googleapis.com/youtube/v3/playlistItems?part=contentDetails&maxResults=1&playlistId=" + playlistID + "&fields=items%2FcontentDetails&key=" + apikey,true);
            getArchiveVideo.send();

        }
    }
    getPlaylist.open("GET","https://www.googleapis.com/youtube/v3/channels?part=contentDetails&id=" + channelID + "&fields=items%2FcontentDetails&key=" + apikey,true);
    getPlaylist.send();
}

and this code :

$content ='<a href="http://website.com/" />
    <a href="/link1" />
    <a href="https://website.com" />
    <a href="link1" />';

I want to use the code above to replace href tags doesn't start with an http or https or with a slash .
thanks in advance.

Answer 1

Something like this should do it. I'd advise using a parser in the future, How do you parse and process HTML/XML in PHP?, for tasks such as this though. This can become very messy quickly. Here's a link on this regex usage as well, http://www.rexegg.com/regex-best-trick.html.

Regex:

x10

Demo: https://regex101.com/r/cV2xB5/1

PHP Usage:

/href=("|')https?:\/\/(*SKIP)(*FAIL)|href=("|')(.*?)\2/

Output:

$content ='<a href="http://website.com/" />
    <a href="/link1" />
    <a href="https://website.com" />
    <a href="link1" />';
echo preg_replace('/href=("|\')https?:\/\/(*SKIP)(*FAIL)|href=("|\')\/?(.*?)\2/', 'href=$2http://website2.com/$3$2', $content);

Update, for <a href="http://website.com/" /> <a href="http://website2.com/link1" /> <a href="https://website.com" /> <a href="http://website2.com/link1" /> exclusion

Use:

//

Demo: https://regex101.com/r/cV2xB5/2

PHP:

href=("|')(?:https?:)?\/\/(*SKIP)(*FAIL)|href=("|')(.*?)\2

Output:

$content ='<a href="//website.com/" />
    <a href="/link1" />
    <a href="https://website.com" />
    <a href="link1" />';
echo preg_replace('/href=("|\')(?:https?:)?\/\/(*SKIP)(*FAIL)|href=("|\')\/?(.*?)\2/', 'href=$2http://website2.com/$3$2', $content);

php preg_replace href attribute using conditions

1 个答案: