Question

I have a big string that contains mysite/tim/here-is-something.html and other url patterns such as mysite/a/some-thing.html. Now i want to change all - to + of the first pattern and keep all other pattern intact.

Anyone know how to deal with this?

Thank you for any suggestion!

Answer 1

$pattern = '!((mysite/tim/)[-\w\.]*)+(?=((mysite/a/)+)|(\s+|\n))!';
$html = 'mysite/tim/here-is-something.html   mysite/tim/here-is-something.html  mysite/a/here-is-something.html mysite/tim/here-is-som-ething.html  mysite/a/here-is-something.html mysite/tim/he-re-is-so-m-eth-ing.html  mysite/a/here-is-something.html  mysite/a/here-is-something.html mysite/tim/here-is-something.html  mysite/tim/here-is-something.html 
mysite/tim/here-is-something.html ';
preg_match_all($pattern,$html, $match);
//print_r($match);
foreach ($match[0] as $value) {
    $modified_value=str_replace("-","+", $value);
    $html=str_replace($value,$modified_value,$html);
}
print_r ($html);

Output:

mysite/tim/here+is+something.html mysite/tim/here+is+something.html mysite/a/here-is-something.html mysite/tim/here+is+som+ething.html mysite/a/here-is-something.html mysite/tim/he+re+is+so+m+eth+ing.html mysite/a/here-is-something.html mysite/a/here-is-something.html mysite/tim/here+is+something.html mysite/tim/here+is+something.html mysite/tim/here+is+something.html

Found matches:

match[0] => Array
        (
            [0] => mysite/tim/here-is-something.html
            [1] => mysite/tim/here-is-something.html
            [2] => mysite/tim/here-is-som-ething.html
            [3] => mysite/tim/he-re-is-so-m-eth-ing.html
            [4] => mysite/tim/here-is-something.html
            [5] => mysite/tim/here-is-something.html
            [6] => mysite/tim/here-is-something.html
        )