Tickets :: Comment on [#8627] Improve String::wordwrap() performance

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Comment	> I isolated this problem down to the user of iconv_substr. It's > incredibly slow compared to mb_substr, and it gets called a lot. > > Here's a benchmark script: > http://pastebin.com/r63kUt22 > > On my mac, the difference is very much visible, but not terrible performance: > > iconv_substr: 0.014400005340576 > mb_substr: 0.00049901008605957 > substr: 3.7193298339844E-5 > > On 2 linux machines we tried, the numbers looked more like this: > > iconv_substr: 8.3735179901123 > mb_substr: 0.00039505958557129 > substr: 4.8160552978516E-5 > > Yes that's 8 seconds for iconv_substr, 0.0004 seconds for mbstring > and 0.00005 for the non-unicode aware function. > > So my fix is to change Horde_String::substr and prefer mbstring over iconv
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