Re: Fast prefix search?

On Sun, 2007-10-14 at 02:07 +0900, js wrote: > On 10/14/07, Nathan Nobbe <quickshiftin@gmail.com> wrote: > > can you use the php string manipulation functions ? > > I'll probably use strstr() to check whether a string starts with some prefix. >From the help for PHP's strstr() function: "Note: If you only want to determine if a particular needle occurs within haystack, use the faster and less memory intensive function strpos() instead." So don't use strstr() use strpos(). Specifically use it like follows: if( strpos( $haystack, $prefix ) === 0 ) { // it's a prefix. } This wasn't particularly meant to address the original question, only the improper use of strstr() for checking if one string exists within another. Cheers, Rob. -- ........................................................... SwarmBuy.com - http://www.swarmbuy.com Leveraging the buying power of the masses! ...........................................................