Regular Expression Help (preg_match)

Hi,

I have this example string

<tag> some random string here </tag>
<tag> some random this is what we want more random </tag>
<tag> another random string here </tag>

Code (markup):

This code works:

<?php 
if(preg_match('/<tag>(.*this is what we want.*)<\/tag>/si', $string) {
echo 'Ok';
}
?>

PHP:

But it works also if we have the following string:

<tag> some random string here </tag>
some random this is what we want more random
<tag> another random string here </tag>

Code (markup):

I don't want the regexp to work for the above string because it doesn't wrapped with <tag> and </tag>

Any ideas how should I use the regexp?

 

This will work;

<?php
$str = "<tag> some random string here </tag>
some random this is what we want more random
<tag> another random string here </tag>";

preg_match_all('/<tag>(.*?)<\/tag>/si', $str, $ff);
print_r($ff);
?>

PHP:

OUTPUT:

Array
(
    [0] => Array
        (
            [0] => <tag> some random string here </tag>
            [1] => <tag> another random string here </tag>
        )

    [1] => Array
        (
            [0] =>  some random string here 
            [1] =>  another random string here 
        )

)

Code (markup):

 

@lukeg32 thanks, but I want to find "this is what we want" and it should be wrapped with <tag> and </tag>.
The phrase "this is what we want" should be used in the regexp because it is important

 

preg_match('#<tag>(.*?this is what we want.*?)</tag>#si', $string);

PHP:

 

can u suggest me another function batter then preg_match. b/c i always gets error while using this funtion

 

Use preg_split to split the text into lines, then remove the unwanted tags from each item in a loop.