php - Regex for finding url -

- 

<a href="http://newday.com/song.mp3">first link</a> <div id="right_song">          <div style="font-size:15px;"><b>pitbull ft. chris brown - pitbull feat. chris brown - international love mp3</b></div>          <div style="clear:both;"></div>  <div style="float:left;">      <div style="float:left; height:27px; font-size:13px; padding-top:2px;">          <div style="float:left;">      <a href="http://secondurl.com/thisoneshouldonlyoutput" rel="nofollow" target="_blank" style="color:green;">second link</a></div>';

i want out second link html using pregmatch_all. current regex looks this:

preg_match_all("/\<a.+?href=(\"|')(?!javascript:|#)(.+?)\.mp3(\"|')/i", $html, $urlmatches);

this works fine , 2 links output, want second 1 output without .mp3 extension. please me

description

this regex will

  • match first anchor tag after <div id="rigth_song"> has href attribute value ends .mp3
  • will avoid many of edge cases make matching html text regular expression difficult.

<div\sid="right_song">.*?<a(?=\s|>)(?=(?:[^>=]|='[^']*'|="[^"]*"|=[^'"][^\s>]*)*?\shref=(['"]?)(.*?\.mp3)\1(?:\s|\/>|>))(?:[^>=]|='[^']*'|="[^"]*"|=[^'"][^\s>]*)*>.*?<\/a>

enter image description here

example

sample text

note difficult edge case in second anchor tag, string href="bad.mp3" nested inside attribute value; there javascript greater sign > inside value; , real href attribute without quotes. 

<a href="http://newday.com/song.mp3">first link</a> <div id="right_song">          <div style="font-size:15px;"><b>pitbull ft. chris brown - pitbull feat. chris brown - international love mp3</b></div>          <div style="clear:both;"></div>  <div style="float:left;">      <div style="float:left; height:27px; font-size:13px; padding-top:2px;">          <div style="float:left;">  <a onmouseover=' href="bad.mp3" ; if ( 6 > x ) {funrotate(href); } ; ' href="http://secondurl.com/thisoneshouldonlyoutput.mp3">first link</a> </div>

code

<?php $sourcestring="your source string"; preg_match('/<div\sid="right_song">.*?<a(?=\s|>)(?=(?:[^>=]|=\'[^\']*\'|="[^"]*"|=[^\'"][^\s>]*)*?\shref=([\'"]?)(.*?\.mp3)\1(?:\s|\/>|>))(?:[^>=]|=\'[^\']*\'|="[^"]*"|=[^\'"][^\s>]*)*>.*?<\/a> /imsx',$sourcestring,$matches); echo "<pre>".print_r($matches,true); ?>

match

group 0 gets text <div through including full matching anchor tag
group 1 gets opening quote around href value referenced later
group 2 gets href value

[0] => <div id="right_song">          <div style="font-size:15px;"><b>pitbull ft. chris brown - pitbull feat. chris brown - international love mp3</b></div>          <div style="clear:both;"></div>  <div style="float:left;">      <div style="float:left; height:27px; font-size:13px; padding-top:2px;">          <div style="float:left;">  <a onmouseover=' href="bad.mp3" ; if ( 6 > x ) {funrotate(href); } ; ' href="http://secondurl.com/thisoneshouldonlyoutput.mp3">first link</a> [1] => " [2] => http://secondurl.com/thisoneshouldonlyoutput.mp3

Comments

Post a Comment

Popular posts from this blog

html5 - What is breaking my page when printing? -

-
Image
i have questioner , don't know why when printing it's creating break before first question. live demo (link) i able resolve issue removing fieldset container had wrapped in.. having fieldset element causing of fields grouped together, , since not fit on first page, being pushed second page. removing fieldset element, able firefox print first 2 questions on page 1 identically chrome. it seems not new problem firefox , fieldset not playing nice found old bugzilla ticket 2008 has persisted , still being commented on in 2014 (link) if retaining fieldset important, found solution else came here (link) <script type='text/javascript'> $(window).bind('beforeprint', function(){ $('fieldset').each( function(item) { $(this).replacewith($('<div class="fieldset">' + this.innerhtml + '</div>')); } ) }); $(window).bind(
Read more

c# - must be a non-abstract type with a public parameterless constructor in redis -

-
when save object, got below error must non-abstract type public parameterless constructor in order use parameter 't' in generic type or method 'servicestack.redis.redisclient.store<t>(t) redisclass.getinstnace().store(msg); // error here redisclass.getinstnace().save(); as third party's class, can not edit how save object? could create wrapper around third party object call constructor, store wrapper? e.g. public class mywrapper { public thirdpartyobject thirdpartyinstance { get; set; } public mywrapper() { thirdpartyinstance = new thirdpartyobject("constructors"); } }
Read more

ajax - PHP/JSON Login script (Twitter style) not setting sessions -

-
i'm having trouble getting twitter style login work properly, reason gets stuck at session_register("useremail"); session_register("userpass"); and doesn't redirect after it. if enter wrong account data, works , appropriate error message pops up. this full code: <?php if(empty($_post['email']) || empty($_post['password'])) { die(msg(0,"all fields required")); } if(!(preg_match("/^[\.a-z0-9_\-\+]+[@][a-z0-9_\-]+([.][a-z0-9_\-]+)+[a-z]{1,4}$/", $_post['email']))) die(msg(0,"you haven't provided valid e-mail")); $host="localhost"; $username="root"; $password="x"; $db_name="x"; $tbl_name="x"; mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select db"); $useremail=$_post['email']; $userpass=
Read more