note 53830 added to function.gzcompress
| From: | php-general at lists dot php dot net | Date: | Tue, 14 Jun 2005 14:39:03 +0000 |
| Subject: | note 53830 added to function.gzcompress | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-90419@lists.php.net to get a copy of this message | ||
If no parameter is given, the default level of 6 is used.
benchmarking the speed:
(compression, datasize, compress time)
0: 37440 (0.002 s)
1: 2537 (0.002 s)
2: 2298 (0.003 s)
3: 2199 (0.003 s)
4: 2299 (0.003 s)
5: 1939 (0.004 s)
6: 1789 (0.004 s)
7: 1724 (0.004 s)
8: 1635 (0.005 s)
9: 1635 (0.005 s)
Level 0 = no compression, then level 1-4 are roughly the fastest to compress with reasonable
quality. level 5-7 give better compression but take a little longer and 8-9 take nearly double the
time to compress but give best results.
So the system default of 6 is actually a good compromise in speed/size. But for very fast
compression times, I go with the threshold value of 3.
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Manual Page -- http://www.php.net/manual/en/function.gzcompress.php
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