php - Filtering <iframe> src attribute -

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i have website allows user embed videos using <iframe> tags such .

<iframe width="560" height="315" src="http://www.youtube.com/embed/se2p7hjpane" frameborder="0" allowfullscreen></iframe>

however, not idea since can input website on src attribute , not video. such <iframe src="http://www.google.com"/>

is there anyway handle this?

parse urls submitted , filter them through whitelist. aren't on list either discarded or put in queue administrator approval.


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