flush

问题 For example, this doesn't work (Firefox 21, IE8): <?php function flush_buffers(){ ob_end_flush(); ob_flush(); flush(); ob_start(); } ob_start(); echo 'Text 1<br />'; flush_buffers(); Sleep(2); echo 'Text 2<br />'; flush_buffers(); Sleep(2); echo 'Text 3<br />'; flush_buffers(); Sleep(2); echo 'Text 4<br />'; ?> But this one works: <?php function flush_buffers(){ echo str_pad('',4096); ob_end_flush(); ob_flush(); flush(); ob_start(); } ob_start(); echo 'Text 1<br />'; flush_buffers(); Sleep(2)

问题 I'm using the following code to produce buffered output on a db maintenance script: function flush_buffers($string){ echo $string; ob_end_flush(); ob_flush(); flush(); ob_start(); } While this works as expected on my local Wamp server, showing output each time the function is invoked, it doesn't on the online web server: here the output is sent only once the script has ended. How is that? 回答1: Make sure output buffering is off in your php.ini file on your web server. You also don't have to

问题 I'm using JavaComm, and getting the inputStream from the serial port object. I have a problem in that sometimes when the system starts up there are noise characters in the buffer that I do not want. I want to initialize the serial port then somehow flush the input of all data before I begin my processing. Is there any way to do that? TY Fred 回答1: How would a "flush()" method know what is garbage and what is real data? Only you know, and your program should be prepared to ignore leading

问题 I've already searched about this, but still cannot figure out what I'm doing wrong. After calling save() the domain object id is null . I've read it'll happen if there's a problem when saving the object, and that save(flush:true) should throw an error if that's the case, but it's not. Look at my code and the output: def pic = new Picture(title:'XX', path:"XXX") album.addToPictures(pic).save() if(pic.validate()) println "no errors. New id: " + pic.id else println "with errors" Output: no

问题 In very short, my dao session.save method does not commit (UPDATE: and nor does the related service method) unless I manually specify session.flush(). This problem has been discussed once before on stackoverflow here. But there is no satisfactory answer yet, and I believe to force flush programmatically is bad practice. Help with diagnoses would be helpful. My Service Layer: @Transactional(readOnly = false, propagation = Propagation.REQUIRES_NEW) public void saveTestType(TestType tt) throws

问题 I'm about to choose using FlushFileBuffers after each write in a file or FILE_FLAG_NO_BUFFFERING each time I need open the same file. But I did not find any performance comparison table about the use of one or another option. Well, except this advice in MSDN: If an application is performing multiple writes to disk and also needs to ensure critical data is written to persistent media, the application should use unbuffered I/O instead of frequently calling FlushFileBuffers. To open a file for

问题 My goal is to early flush the header part of my website while my php script is stitching the rest of the page together and sends it once its done. Important is that the chunks are sent compressed to the browser. (I am using Apache/2.2 and PHP/5.3.4) Right now I am trying to achieve this by calling ini_set("zlib.output_compression", "On") in my PHP script. But if I use flush() anywhere in my script even at the end the compression won't work anymore. Questions are: a) By using this method zlib

问题 I wanted a file object that flushes out straight to file as data is being written, and wrote this: class FlushingFileObject(file): def write(self,*args,**kwargs): return_val= file.write(self,*args,**kwargs) self.flush() return return_val def writelines(self,*args,**kwargs): return_val= file.writelines(self,*args,**kwargs) self.flush() return return_val but interestingly it doesn't flush as I write to it, so I tried a few things including this: class FlushingFileObject(object): def __init__

问题 Is there any way to get an entity ID before the persist/flush? I mean: $entity = new PointData(); $form = $this->createForm(new PointDataType(), $entity); If I try $entity->getId() at this point, it returns nothing. I can get it working by: $em->persist($entity); $em->flush(); (supposing $em = $this->getDoctrine()->getEntityManager(); ) How can I achieve this? 回答1: If you want to know the ID of an entity before it's been persisted to the database, then you obviously can't use generated

问题 i have this script: <?php header('Content-type: multipart/x-mixed-replace;boundary=endofsection'); print "\n--endofsection\n"; $pmt = array("-", "\\", "|", "/" ); for( $i = 0; $i <10; $i ++ ){ sleep(1); print "Content-type: text/plain\n\n"; print "Part $i\t".$pmt[$i % 4]."<br />"; print "--endofsection\n"; ob_flush(); flush(); } print "Content-type: text/plain\n\n"; print "The end\n"; print "--endofsection--\n"; ?> This scripts works well.. The problem is when the data flushed the previous