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Brain deadness of PHP [message #2119]

Wed, 01 May 2002 01:43

Ilia

Messages: 13241
Registered: January 2002

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"substr_replace" function was introduced a while back into PHP, in theory it is a wonderful function that allows the user to replace a section of the string with another.

Well, today while coding FUDcode parser, I decided to use that function , I should've known better.

After spending over 1 hour trying to trace the reason behind the slowness of my code I found out that substr_replace function is EXTREMLY slow and becomes exponentially slower as the string size increases. Now the "funny" part using php code I was able to write the same function which was in excess of 100% faster!!!!
This should give you some idea as to how badly that function is written, since it is written in C and not PHP, hence should be @ least 10 times faster then anything I write in PHP.

</rantoff>

Moral of this story, DO NOT use substr_replace!

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[Message index]

		Brain deadness of PHP By: Ilia on Wed, 01 May 2002 01:43
		Re: Brain deadness of PHP By: Olliver on Wed, 01 May 2002 02:17
		Re: Brain deadness of PHP By: basse on Wed, 01 May 2002 14:47
		Re: Brain deadness of PHP By: Ilia on Wed, 01 May 2002 15:34
		Re: Brain deadness of PHP By: sarahk on Fri, 12 December 2003 17:12
		Re: Brain deadness of PHP By: Ilia on Fri, 12 December 2003 17:21

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