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<h2 class="title">Stream Classes</h2>
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User designed wrappers can be registered via <span class="function"><a href="function.stream-wrapper-register.html" class="function">stream_wrapper_register()</a></span>,
using the class definition shown on that manual page.
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Class <a href="class.php-user-filter.html" class="classname">php_user_filter</a> is predefined and is an abstract
baseclass for use with user defined filters. See the manual page for
<span class="function"><a href="function.stream-filter-register.html" class="function">stream_filter_register()</a></span> for details on implementing
user defined filters.
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