Description:
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I'm using pecl_http with apc. I have a class which extends HttpResponse class - with apc it is impossible to use child class, because any kind of action crashes php/apache.

Reproduce code:
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class ExampleClass extends HttpResponse {
}

$test = new ExampleClass();
ExampleClass::setContentDisposition("test.txt");

Expected result:
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Should work...

Actual result:
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PHP/apache crash