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<H1><A NAME="4">4 Quick Start: Dynamic Image Generation</A></H1>
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<P> The purpose of this chapter is to put dynamic image generation in
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perspective and illustrate how HTML tags is used to call image
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generating scripts. Even if You are familiar with PHP it is strongly
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recommended to quickly browse through this chapter to make sure all
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concepts are known.</P>
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<P> If You fully understand and can explain the concept of MIME types,
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HTTP streams and why the "Headers already sent error" error is very
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common when generating dynamic images with PHP it is probably safe to
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skip this chapter. Otherwise it might be wise to read through this
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chapter once.</P>
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