PHP remove specific image

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<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.<img src="http://www.another-domain.tld/r/151230695794/32310/s/25e829c1/removeit.img" alt="" width="1" height="1" border="0" /></p>

<p>Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem. Nulla consequat massa quis enim. Donec pede justo, fringilla vel, aliquet nec, vulputate eget, arcu.<img src="http://used-domain.tld/r/151230695794/32310/s/25e829c1/donremovethis.img" alt="" width="100" height="50" border="0" /></p><p>
Donec sodales sagittis magna. Sed consequat, leo eget bibendum sodales, augue velit cursus nunc.
<img src="http://specific-domain.tld/r/151230695794/32310/s/25e829c1/removeit.img" alt="" width="1" height="1" border="0" /></p>

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