trimming a string either side of a keyword

[ceaseanddesist]

i want to trim the search results 100 chars EITHER side of the word. BUT
that word might appear as the first word in results or the last in which
case i need to recognise this any only trim left or right acordingly.

e.g.

scenario one word search is "and" which is in the middle

results = " 1000 chars then keyword another 1000 chars"

required trimmed results = " 100 chars then keyword another 100 chars"

scenario two word search is "and" which is at the start

results = " keyword another 1000 chars"

required trimmed results = "keyword another 100 chars"

scenario three word search is "and" which is at the end

results = "1000 chars then keyword"

required trimmed results = "100 chars then keyword"

any suggestions ?

[David Powers]

ceaseanddesist wrote:

> i want to trim the search results 100 chars EITHER side of the word. BUT
> that word might appear as the first word in results or the last in which
> case i need to recognise this any only trim left or right acordingly.

To get decent help, it's important to say which server-side language
you're using.

--
David Powers
Author, "Foundation PHP 5 for Flash" (friends of ED)
Co-author "PHP Web Development with DW MX 2004" (Apress)
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