Remove only a tag and all its contents

[Parhs]

Hello i am trying to remove a custom tag from the file but it doesnt work...

example

jfsajdfjsdlfdsa<if test=0>word</if>fejjkfewkfjewkfjkewjfk

should remove all the <if test=0>word</if>

i tried many things..This for example scr*s the output.It prints nothing...

echo preg_replace("/<if test=0>(.)*<\/if>/m","","<if test=0>pahoulo</if> <if test=1>pahoulo</if>");

 

Please help..

[.josh]

/<if.*?if>/

 

edit:

 

Oh my bad.  I guess I read that wrong or maybe you could have been clearer or both.  Didn't notice you wanted to differentiate test=0 from test=1

 

Problem with your regex is that your * quantifier is being greedy and not stopping until the last </if>.  You need to tell it to not be greedy and stop gobbling up stuff when it reaches first match.  You do that by following it with a question mark ?.  Also, you do not need parenthesis around the dot, since it's only one character and you don't need to capture it.

 

/<if test=0>.*?<\/if>/m

[Parhs]

Thank you for the reply.That works.

But i need some further help..

I want to replace all the tags <if test=0>content</if>  with nothing.That means i want to erase them.

If <if test=1>content</if>  then replace that with content.

 

Your regex works fine but if there are nested tags it becomes a mess.

<if test=1>pasok

<if test=0>b</if>

<if test=1>a</if>

s</if>

 

So the only solution i think is to replace the most inner tags first and repeat the preg_replace.

But i cant find any good regex.

 

echo preg_replace("/<if test=0>(.)*?(?!<if)(.)*?<\/if>/s","",$pap,1);

 

this for example wouldnt work because for example <if test=0>b</if> wouldnt match because after that there is an <if test=1>a</if>

any help apreciated