Having something like this:
'This or is or some or information or stuff or attention here or testing'
I want to capture all the [spaces] that aren't preceded nor followed by the word or.
I reached this, I think I'm on the right track.
/\s(?<!(\bor\b))\s(?!(\bor\b))/
or this
/(?=\s(?<!(\bor\b))(?=\s(?!(\bor\b))))/
I'm not getting all the spaces, though. What is wrong with this? (the second one was a tryout to get the "and" going")
Try this:
<?php
$str = 'This or is or some or information or stuff or attention is not here or testing';
$matches = null;
preg_match_all('/(?<!\bor\b)[\s]+(?!\bor\b)/', $str, $matches);
var_dump($matches);
?>
How about (?<!or)\s(?!or):
$str='This or is or some or information or stuff or attention here or testing';
echo preg_replace('/(?<!or)\s(?!or)/','+',$str);
>>> This or is or some or information or stuff or attention+here or testing
This uses negitive lookbehind and lookahead, this will replace the space in Tor operator for example so if you want to match only or add trailing and preceding spaces:
$str='Tor operator';
echo preg_replace('/\s(?<!or)\s(?!or)\s/','+',$str);
>>> Tor operator
Code: (PHP Demo) (Pattern Demo)
$string = "You may organize to find or seek a neighbor or a pastor in a harbor or orchard.";
echo preg_replace('~(?<!\bor) (?!or\b)~', '_', $string);
Output:
You_may_organize_to_find or seek_a_neighbor or a_pastor_in_a_harbor or orchard.
Effectively the pattern says:
Match every space IF: