What are the advantages and disadvantages of using an iFrame to display content in PHP, especially when dealing with external URLs?

When using an iFrame to display content in PHP, especially when dealing with external URLs, the main advantage is that it allows you to embed content from another website seamlessly into your own. However, a major disadvantage is that it can pose security risks such as clickjacking or cross-site scripting attacks if not implemented correctly. 

<iframe src="https://www.externalwebsite.com" width="100%" height="500"></iframe>

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iFrame content display advantages disadvantages external URLs PHP

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