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Asked: 2026-06-17T13:36:19+00:00

In the below xml i have to append all the url which comes under

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In the below xml i have to append all the url which comes under impression tag.

 <Ad id="32716">        
<InLine>            
    <AdSystem>BrightRoll</AdSystem>         
    <AdTitle/>          
    <Impression><![CDATA[http://2901.btrll.com/imp/2901/12446/PreRoll.911.123806/start;Video;1358769313]]>
    </Impression>           
    <Impression><![CDATA[http://brxserv.btrll.com/v1/epix/6835361/3850628/20799/32716/TbwKgCbwBkAABQ_SyhAABRPwAAf8wAOsGEAAAAAAAfYQiqTYrVDQ/event.imp/r_64.aHR0cDovL2Iuc2NvcmVjYXJkcmVzZWFyY2guY29tL3A_YzE9MSZjMj02MDAwMDA2JmMzPSZjND1icngmYzU9MDEwMDAwJmM2PTY4MzUzNjEmYzEwPSZjQTE9OCZjQTI9NjAwMDAwNiZjQTM9MjA3OTkmY0E0PTM4NTA2MjgmY0E1PTQ3NDcmY0E2PTY4MzUzNjEmY0ExMD0zMjcxNiZjdj0xLjcmY2o9JnJuPTEzNTg3NjkzMTMmcj1odHRwJTNBJTJGJTJGcGl4ZWwucXVhbnRzZXJ2ZS5jb20lMkZwaXhlbCUyRnAtY2I2QzB6RkY3ZFdqSS5naWYlM0ZsYWJlbHMlM0RwLjY4MzUzNjEuMzg1MDYyOC4wJTJDYS40NzQ3LjIwNzk5LjMyNzE2JTJDdS45NjguMHgwJTNCbWVkaWElM0RhZCUzQnIlM0QxMzU4NzY5MzEz]]>
    </Impression>           
    <Impression><![CDATA[http://ib.adnxs.com/seg?add=362896&t=2&cb=1358769313]]>
    </Impression>           
    <Impression><![CDATA[http://rc.rlcdn.com/361686.gif]]>
    </Impression>           
    <Impression><![CDATA[http://mobile.btrll.com/event/impression?ts=1358769313920&siteId=3850628&lineItemId=20799]]>
    </Impression>           
    <Creatives>             
        <Creative sequence="1">                 
            <Linear>                        
                <Duration>00:00:14</Duration>                       
                <TrackingEvents>                            
                    <Tracking event="midpoint"><![CDATA[http://brxserv.btrll.com/v1/epix/6835361/3850628/20799/32716/TbwKgCbwBkAABQ_SyhAABRPwAAf8wAOsGEAAAAAAAfYQiqTYrVDQ/event.mid/r_64.aHR0cDovLzI5MDEuYnRybGwuY29tL2ltcC8yOTAxLzEyNDQ2L1ByZVJvbGwuOTExLjEyMzgwNi9taWQ7VmlkZW87MTM1ODc2OTMxMw]]>
                    </Tracking>                         
                    <Tracking event="complete"><![CDATA[http://brxserv.btrll.com/v1/epix/6835361/3850628/20799/32716/TbwKgCbwBkAABQ_SyhAABRPwAAf8wAOsGEAAAAAAAfYQiqTYrVDQ/event.end/r_64.aHR0cDovLzI5MDEuYnRybGwuY29tL2ltcC8yOTAxLzEyNDQ2L1ByZVJvbGwuOTExLjEyMzgwNi9kb25lO1ZpZGVvOzEzNTg3NjkzMTM]]>
                    </Tracking>                         
                    <Tracking event="complete"><![CDATA[http://mobile.btrll.com/event/completion?ts=1358769313921&siteId=3850628&lineItemId=20799]]>
                    </Tracking>                     
                </TrackingEvents>                       
                <VideoClicks>                           
                    <ClickThrough><![CDATA[http://brxserv.btrll.com/v1/epix/6835361/3850628/20799/32716/TbwKgCbwBkAABQ_SyhAABRPwAAf8wAOsGEAAAAAAAfYQiqTYrVDQ/event.click/r_64.aHR0cDovLzI5MDEuYnRybGwuY29tL2Nsay8yOTAxLzEyNDQ2L1ByZVJvbGwuOTExLjEyMzgwNi9ub25lLztWaWRlbzsxMzU4NzY5MzEz]]>
                    </ClickThrough>                         
                    <ClickTracking><![CDATA[http://brxserv.btrll.com/v1/epix/6835361/3850628/20799/32716/TbwKgCbwBkAABQ_SyhAABRPwAAf8wAOsGEAAAAAAAfYQiqTYrVDQ/event.c_trk/r_64.aHR0cDovLzI5MDEuYnRybGwuY29tL2Nsay8yOTAxLzEyNDQ2L1ByZVJvbGwuOTExLjEyMzkyNy9ub25lLztWaWRlbzsxMzU4NzY5MzEz]]>
                    </ClickTracking>                            
                    <ClickTracking><![CDATA[http://mobile.btrll.com/event/click?ts=1358769313921&siteId=3850628&lineItemId=20799]]>
                    </ClickTracking>                        
                </VideoClicks>                      
                <MediaFiles>                            
                    <MediaFile delivery="progressive" type="video/mp4" bitrate="400" height="240" width="320"><![CDATA[http://brxcdn2.btrll.com/production/134980/Home_Depot_MuddyBoots_640x480_15sec.mp4]]>
                    </MediaFile>                        
                </MediaFiles>                   
            </Linear>                   
        </Creative>             
        <Creative sequence="1">                 
            <CompanionAds>                  </CompanionAds>             
        </Creative>         
    </Creatives>        
</InLine>

In existing content between <Impression> and </Impression>, would like to add more string.

how can i achieve this?

i am trying something like this 

$pattern = '<Impression>.*?</Impression>';      
preg_match($pattern, $jsaved, $matchesarr);
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1 Answer

  1. Editorial Team

    In most cases*, you should not use a regex for parsing HTML or XML. It is not the right tool for the job, and it is likely to be frustrating and error-prone. See this question for better ways of doing this in PHP.

    That being said, your regex is failing because, by default, . does not match a newline character. This means that you will only match <Impression>...</Impression> if it all occurs on a single line.

    To fix this, you have to add the multi-line switch (m):

    $pattern = '|<Impression>.*?</Impression>|m';

    **There are exceptions. A regex can be fine if your input is very well-defined and always follows a predictable format. But it is definitely worth considering whether an XML parser would be better.*

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