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[PHP-DEV] Re:Proposal: Please consider introducing a new function |str_cut| to make fast cutting for a string

Posted by 張俊芝 
Christoph Becker just authored a StringBuilder extension which may serve as base for futher exploration at https://github.com/php/php-src/pull/3483#issuecomment-418696660

which I believe means a long-term effort to solve the issue in this respect.
I am also wondering if the StringBuilder can go into the agenda of PHP intervals. If so, is this str_cut still needed anyway?
Is StringBuilder just enough? Or both of them(StringBuilder and str_cut) are still okay to be provided?
Any thoughts?
I am happy to see either.



在2018年09月01 18時59分,"張俊芝"<[email protected]>寫道:

Hello.

I'd like to suggest PHP introduce a new function |str_cut| to make fast cutting of a string.



If the user wants to cut a large string to a still-very-large string(say, cutting a 1KB string from a larger string),
|str_cut| would be a far more efficient alternative solution than |substr|:


str_cut($str, 1024) vs $str = substr($str, 0, 1024)

|str_cut| works by *directly* reseting the len value of the string.

And I have created a first-draft PR at https://github.com/php/php-src/pull/3483 , I am also going to create an RFC.

I am looking forward to your thoughts.


Zhang Junzhi
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