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need to remove html characters using regex

Posted on 2009-04-07
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Last Modified: 2012-05-06
The text changes sometimes daily, and I don't have the guarantee that the html codes will be the same, but presumably there's a regex pattern that can eliminate the need for filtering all this data out manually?
Here's an example of what my data is producing.
I only want the text, but would probably like to replace the new paragraph with a vbnewline or something so that it 'looks' appropriate...
/FONT></H2>

<H4><FONT COLOR="#0000FF">WIND GUSTS UP TO&NBSP;30 MPH ARE EXPECTED AND CA

E FIRE TO SPREAD.</FONT></H4>

<H4><FONT COLOR="#FF0000">SUNDAY IS NOT A&NBSP;BURN DAY, AS&NBSP;PRESCRIBE

WINNETT COUNTY CODE OF ORDINANCES,&NBSP;CHAPTER 46,&NBSP;FIRE PREVENTION A

ETY.</FONT> &NBSP;</H4>

<H4>

<P></P>

<H3></H3>

<H5></H5>

<H5 CLASS="RIGHTALIGN"></H5>

<FONT COLOR="#000000">THE BURN NOTICE IS UPDATED DAILY AND DETERMINED BY

^C

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Question by:sirbounty
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Expert Comment

by:phpmonkey
ID: 24088832
This should do the trick
preg_replace('/<[^>]*>|&[^;\s]*;/i', '', $source);

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Expert Comment

by:numberkruncher
ID: 24088884
To remove all tags you can simply remove all tag instances. Bare in mind that in-complete tags (like the ones at the start of your posting) will cause problems.

Regular Expression:  \<[^\>]*?\>

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Author Comment

by:sirbounty
ID: 24088891
Not sure about that...I used it in vbscript this way...

objRegex.Pattern = "'/<[^>]*>|&[^;\s]*;/i"
strBodyData = objRegEx.Replace(strBodyData, "")

and it still produced the following:
/FONT></H2>

<H4><FONT COLOR="#0000FF">WIND GUSTS UP TO&NBSP;30 MPH ARE EXPECTED AND CAN CAUS

E FIRE TO SPREAD.</FONT></H4>

<H4><FONT COLOR="#FF0000">SUNDAY IS NOT A&NBSP;BURN DAY, AS&NBSP;PRESCRIBED BY G

WINNETT COUNTY CODE OF ORDINANCES,&NBSP;CHAPTER 46,&NBSP;FIRE PREVENTION AND SAF

ETY.</FONT> &NBSP;</H4>

<H4>

<P><FONT COLOR="#3366FF"></FONT></P>

<H3><FONT COLOR="#FF0000"></FONT></H3>

<H5><FONT COLOR="#0000FF"></FONT></H5>

<H5 CLASS="RIGHTALIGN"><FONT COLOR="#0000FF"></FONT></H5>

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Accepted Solution

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numberkruncher earned 300 total points
ID: 24088905
Try:
objRegex.Pattern = "<[^>]*>|&[^;\s]*;"

strBodyData = objRegEx.Replace(strBodyData, "")

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Author Comment

by:sirbounty
ID: 24088926
Hmm - that last one works except for the leading /FONT (which I can simply replace).
Thanx!
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Expert Comment

by:numberkruncher
ID: 24088940

/FONT> doesn't get removed because it is an incomplete tag.
 

</FONT> should get replaced though.

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Author Comment

by:sirbounty
ID: 24089029
If you have a moment - could you interpret that for me?
Trying to learn regex's but having difficulty digesting them...
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Expert Comment

by:numberkruncher
ID: 24089082

Complete Expression:  <[^>]*>|&[^;\s]*;
 
 

<[^>]*>     - Matches all tags.

              The [^>] bit prevents it replacing the entire input.
 

|           - Or, alternatively
 

&[^;\s]*;   - Matches all entities such as &nbsp;  or &lt;   etc...

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Expert Comment

by:numberkruncher
ID: 24089103
Sorry, my first entity example got transformed by EE.

It should have read (hoping that EE transforms them so they look correct):

Matches all entities such as  &amp;nbsp; or &amp;lt;   etc...

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