At 23:11 27.11.2002, Ernest E Vogelsinger said:
--------------------[snip]--------------------
>If I understand you correctly you want to isolate either quoted strings
>(with or without whitespace), or tokens separated by whitespace, as array
>elements?
>
>For this you would first have to isolate the first quoted sentence, then
>tokenize the part before, and loop this as long you're not done.
>
>Should work something like that:
>
> [...]
>Disclaimer: untested as usual. _Should_ behave like this:
--------------------[snip]--------------------
I _should_ have tested. This script actually works the way you expect it to be:
------------<code>------------
<xmp>
<?php
function tokenize_search($input) {
$re = '/\s*(.*?)\s*"\s*([^"]*?)\s*"\s*(.*)/s';
/* look for 3 groups:
a - prematch - anything up to the first quote
b - match - anything until the next quote
c - postmatch - rest of the string
*/
$tokens = array();
while (preg_match($re, $input, $aresult)) {
// aresult contains: [0]-total [1]-a [2]-b [3]-c
// tokenize the prematch
if ($aresult[1]) $tokens = array_merge($tokens, explode(' ',
$aresult[1]));
array_push($tokens, $aresult[2]);
$input = $aresult[3];
}
// $input has the rest of the line
if ($input) $tokens = array_merge($tokens, explode(' ', $input));
return $tokens;
}
$string = "\"search for this sentence\" -NotForThisWord
ButDefinitelyForThisWord";
$tokens = tokenize_search($string);
print_r($tokens);
?>
------------</code>------------
The output of this script is:
Array (
[0] => search for this sentence
[1] => -NotForThisWord
[2] => ButDefinitelyForThisWord
)
--
>O Ernest E. Vogelsinger
(\) ICQ #13394035
^ http://www.vogelsinger.at/
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