Re: [PHP] (Newbie) String within a string
At 13:48 18/01/01 +, jalist wrote: >I'm trying to grab a string from within a string based on a matching word or >phrase. Example... > >$string = "This is a string I need to grab the middle out of" >$query_word = "need" > >I need to get x amount of characters either side of $query_word, so the >result string would be like... > >"string I need to grab the" > >And I need the result string to be full words, not like..."ing I need to >grab th" > >I've half managed to do it using strpos and substr but the code is really >messy and I'm getting half-formed words back. Anyone got any suggestion on >how to accomplish this? > >Thanks very much in advance. I'd suggest using regular expressions (ereg, or preg_match). It's a little too early in the morning on a weekend for me to come up with the best example of what would work, sorry :) Angus. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
RE: [PHP] (Newbie) String within a string
original question jalist:
> > I'm trying to grab a string from within a string based on a matching word
> > or phrase.
In the middle of the night i was thinking hey, why not use a regexp,
look for the pattern word-space-word-space-SEARCHWORD-space-word-space-word
something like
$toshow =
regexp ( "( [alphanum]+ [alphanum]+ [$YOURWORD] [alphanum]+ [alphanum]+
)", $totalstring);
I am totally bad with regexps, but that 's the idea. Might be faster than
the array? You'll have to take care of comma's etc.
From: "jalist" <[EMAIL PROTECTED]>
To: "PHP" <[EMAIL PROTECTED]>
Date sent: Thu, 18 Jan 2001 16:12:31 -
Subject:RE: [PHP] (Newbie) String within a string
> Excellent, thanks a lot Chris.
>
> Steve
> (jalist)
> [EMAIL PROTECTED]
> http://ls2k.org
>
> -Original Message-
> From: Chris Hayes [mailto:[EMAIL PROTECTED]]
> Sent: 18 January 2001 15:43
> To: jalist; PHP
> Subject: Re: [PHP] (Newbie) String within a string
>
>
>
> jalist:
> > I'm trying to grab a string from within a string based on a matching word
> or
> > phrase. Example...
>
> You say you want the middle, not two words before and two words after.
>
> I see several ways.
>
>
> 1. Explode into an word-array and use that:
> 1. prepare string
>a) add spaces after comma's and fullstops by some replace
> operation (replace ',' by ', ').
>b) remove double spaces
> 2. split to an array using explode (space as string separator)
> Now you have every word in a separate place in the array
> 3. Get # of words by count($array)
> 4. Divide by two and get nearest integer (hence floor and +0.5!)
> $mid= floor(count($array)/2 + 0.5)
> OH NO, correction, that's the middle, you wanted a specific word.
> I'm afraid you'll have to walk thorugh the array to find the word
> you need.
>
>for (i=0;i{
>if ($array[$i]==$searchword)
> { $fragment= "...".
> $array[$mid-2] ." "
>$array[$mid-1] ." "
> $array[$mid] ." "
> $array[$mid+1] ." "
> $array[$mid+2] ."...";
> ##extra job for you: make sure $i >= 2
> ## and $i <= count-2
> ## or you'll get an error
>
> [exit the for loop somehow, maybe drop
> this in a function and RETURN;]
> }
>
>}
>
>
>
> OR
>
> 2. Continue with the strpos and strrpos, organize it a bit better.
> For instance find the middle of the string. Split at nearest
> space in leftstring and rightstring.
>
> Make a function chop_last_word, chop last two or three words from
> leftstring and add to resultstring in right order.
>
> Same for rightstring.
>
> I think the array way is cleaner.
>
> Chris
>
>
> -- C.Hayes Droevendaal 35 6708 PB Wageningen the Netherlands --
>
>
>
>
> --
> PHP General Mailing List (http://www.php.net/)
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RE: [PHP] (Newbie) String within a string
Excellent, thanks a lot Chris. Steve (jalist) [EMAIL PROTECTED] http://ls2k.org -Original Message- From: Chris Hayes [mailto:[EMAIL PROTECTED]] Sent: 18 January 2001 15:43 To: jalist; PHP Subject: Re: [PHP] (Newbie) String within a string jalist: > I'm trying to grab a string from within a string based on a matching word or > phrase. Example... You say you want the middle, not two words before and two words after. I see several ways. 1. Explode into an word-array and use that: 1. prepare string a) add spaces after comma's and fullstops by some replace operation (replace ',' by ', '). b) remove double spaces 2. split to an array using explode (space as string separator) Now you have every word in a separate place in the array 3. Get # of words by count($array) 4. Divide by two and get nearest integer (hence floor and +0.5!) $mid= floor(count($array)/2 + 0.5) OH NO, correction, that's the middle, you wanted a specific word. I'm afraid you'll have to walk thorugh the array to find the word you need. for (i=0;i= 2 ## and $i <= count-2 ## or you'll get an error [exit the for loop somehow, maybe drop this in a function and RETURN;] } } OR 2. Continue with the strpos and strrpos, organize it a bit better. For instance find the middle of the string. Split at nearest space in leftstring and rightstring. Make a function chop_last_word, chop last two or three words from leftstring and add to resultstring in right order. Same for rightstring. I think the array way is cleaner. Chris -- C.Hayes Droevendaal 35 6708 PB Wageningen the Netherlands -- -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
Re: [PHP] (Newbie) String within a string
jalist: > I'm trying to grab a string from within a string based on a matching word or > phrase. Example... You say you want the middle, not two words before and two words after. I see several ways. 1. Explode into an word-array and use that: 1. prepare string a) add spaces after comma's and fullstops by some replace operation (replace ',' by ', '). b) remove double spaces 2. split to an array using explode (space as string separator) Now you have every word in a separate place in the array 3. Get # of words by count($array) 4. Divide by two and get nearest integer (hence floor and +0.5!) $mid= floor(count($array)/2 + 0.5) OH NO, correction, that's the middle, you wanted a specific word. I'm afraid you'll have to walk thorugh the array to find the word you need. for (i=0;i= 2 ## and $i <= count-2 ## or you'll get an error [exit the for loop somehow, maybe drop this in a function and RETURN;] } } OR 2. Continue with the strpos and strrpos, organize it a bit better. For instance find the middle of the string. Split at nearest space in leftstring and rightstring. Make a function chop_last_word, chop last two or three words from leftstring and add to resultstring in right order. Same for rightstring. I think the array way is cleaner. Chris -- C.Hayes Droevendaal 35 6708 PB Wageningen the Netherlands -- -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP] (Newbie) String within a string
I'm trying to grab a string from within a string based on a matching word or phrase. Example... $string = "This is a string I need to grab the middle out of" $query_word = "need" I need to get x amount of characters either side of $query_word, so the result string would be like... "string I need to grab the" And I need the result string to be full words, not like..."ing I need to grab th" I've half managed to do it using strpos and substr but the code is really messy and I'm getting half-formed words back. Anyone got any suggestion on how to accomplish this? Thanks very much in advance. Steve -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
